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RE: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:11:00 <Craig Tonkin [Craig.Tonkin@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

Is this the case
If so BUGGER
Shane - you have two days to find a way to do this for an Auto :-)

-----Original Message-----
From: Marc Archbold [mailto:Marc.A@xtra.co.nz]
Date: Wednesday, November 03, 1999 1:11 PM
To: Shane Plummer
Cc: sconz@listbot.com
Subject: Re: MKIII Speedo Converter - Speed Limiter?


Supra Club of New Zealand - http://www.econz.co.nz/~supras

I thought about doing this..... the cct is very simple, and it should work
to effectively 'lift' the speed cut, the downside is that you cannot fit
this to an automatic if the ECT/ECU is integrated.

-MA
----- Original Message -----
From: Shane Plummer <splummer@wave.co.nz>
To: UK Supras Mailing List <uksupras@listbot.com>
Cc: <sconz@listbot.com>
Date: Wednesday, 3 November 1999 10:03
Subject: MKIII Speedo Converter - Speed Limiter?


> Supra Club of New Zealand - http://www.econz.co.nz/~supras
>
> I need to get my head around the simplicity of this.
>
> If the same technique was used on the MKIII digital dash board / ECU,
using
> 5/8 frequency conversion unit.. this would also affectively move speed
fuel
> cut from 180KM to 180Mph?
>
> NZ uses KPH as the standard unit of measure , I would be happy to use MPH
if
> this removed speed limiter!!
>
> Is this correct
>
> Regards
>
> Shane
>
> >
> > Craig,
> >
> > Let's make sure I understand:
> >
> > >> Everything else works OK (spoiler at
> > >> 60, speedo, odo)
> > >> including the cruise control (now works beyond 70 MPH).
> >
> > 1:
> > You have fitted a 5/8 frequency conversion unit (speed converter) to the
> > speedometer input signal, now your speedo displays MPH and you did this
> > behind the dash in the vacinity of the speedo head?
> >
> > 2:
> > You have done the simple mod of the odometer and swapped two LCD leads
> > around and fed it with the 5/8 modified signal. Now your odometer
displays
> > MILES (not Km) and clocks up in miles.
> > (For the purists out there you can convert this to the full UK spec by
> > moving two surface mount resistors AND making sure the original signal,
> > unmodified is sent to the unit. This requires more electronics skills)
> > HAVE YOU DONE THE FIRST METHOD, DOES IT CORRECTLY INCREMENT IN MILES!!!
> ??
> >
> > 3:
> > The spoiler works at 60MPH therefore it must be being fed with the
> original
> > (unmodded) signal from the speed sensors. (1:1 and not the modified 5:8
> > signal)
> >
> > 4:
> > The Cruise control now works beyond 70MPH. I assume it didn't work
beyond
> > this limit before. Can you remember? It's important becasue you may not
> have
> > actually changed anything in this part of the circuit and as it worked
> > before you wouldn't see any change.
> > So DID THE CRUISE WORK BEYOND 70MPH BEFORE ??
> >
> >
> > The Spoiler/Cruise works O.K. but the speed limit still exists at
112mph?
> >
> > >>Whats confusing me is if there was a wiring/unit problem why has the
> > cruise
> > >>limit extended but not the speed limit?
> >
> > I'm confused as well!
> >
> > My only idea about this one is that you cut the signal to the spoiler
> > control unit too far back in the wiring loom. The speed signal goes all
> over
> > the place and 'T's off at various places, if you don't cut it at the
> > connector to the spoiler CU then you run the risk that more than just
the
> > spoiler are going to be affected.
> >
> > This is just a hunch but if you followed my instructions then you
> shouldn't
> > have done this.
> >
> > Let me know a bit more specific detail of what you did.
> >
> > Pete
> >
> >
> > ______________________________________________________________________
> > To unsubscribe, write to uksupras-unsubscribe@listbot.com
> > Start Your Own FREE Email List at http://www.listbot.com/
> >
>
>
> ______________________________________________________________________
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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Marc Archbold [marc.a@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras


> Just a comment here from one who can't make head nor tail of all this
> jargon:-) at the moment anyway. I have just got a pulse changer which
should
> fit in between the ecu and the speed sensor. I will let you know what
> happens. The main problem I see is that the ecu will think its doing 30
km's
> when its doing 120km's. Will this cause a problem with fuel delivered or
> not? I await any input, and if anyone can tell me if the MPH thing works,
> then I will do that on my manual car.
>
> MMM

Well worth a go!


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Murray [triplem@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

To True :-) we do most of our work after midnight don't we? or does it just
feel like it?

MMM
----- Original Message -----
From: Stuart Woolford <stuartw@kcbbs.gen.nz>
To: Murray <triplem@xtra.co.nz>
Cc: Shane Plummer <splummer@wave.co.nz>; <sconz@listbot.com>
Date: Wednesday, November 03, 1999 11:12 PM
Subject: Re: MKIII Speedo Converter - Speed Limiter?


>
>
> On Wed, 3 Nov 1999, Murray wrote:
>
> > Supra Club of New Zealand - http://www.econz.co.nz/~supras
> >
> > It is alright to go to sleep you know? :-)
> >
> > MMM
>
> This early? it's not even AM yet!
>
>
>


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Marc Archbold [Marc.A@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras


> Is this the case
> If so BUGGER
> Shane - you have two days to find a way to do this for an Auto :-)
>
Yep unfortunately :-(....... If you have a diagram of your 3.0T; check to
see if it has a separate ECT that the speed signal is split between it and
the ECU. If it is split you may be able to cut only the speed signal wire
to the ECU and add your cct here.....

Sorry folks, I have not yet completed my speed cut lifter cct.....

-MA


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RE: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Craig Tonkin [Craig.Tonkin@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

I am bloody glad I don't have a PC at home otherwise I would be online until
late hours :-)

-----Original Message-----
From: Murray [mailto:triplem@xtra.co.nz]
Date: Wednesday, November 03, 1999 11:01 PM
To: Shane Plummer; sconz@listbot.com
Subject: Re: MKIII Speedo Converter - Speed Limiter?


Supra Club of New Zealand - http://www.econz.co.nz/~supras

It is alright to go to sleep you know? :-)

MMM
----- Original Message -----
From: Shane Plummer <splummer@wave.co.nz>
To: Shane Plummer <splummer@wave.co.nz>; <sconz@listbot.com>
Date: Wednesday, November 03, 1999 10:44 PM
Subject: Re: MKIII Speedo Converter - Speed Limiter?


> Supra Club of New Zealand - http://www.econz.co.nz/~supras
>
> OK its late, I need my sleep
>
> WARM!!!!!!!!!!!!!!!!!!
>
>
>
> > ARE WE GETTING WORM.......
> >
> > Come on guys (Over educated computer experts) it can be done.. If only
> know
> > anything about electronics!!
> >
> > Apparently our UK brothers have worked out a way to remove the speed cut
> for
> > very little money.
> >
> > Marc ??
> >
> > ----- Original Message -----
> > From: <peter.betts@nokia.com>
> > To: <uksupras@listbot.com>
> > Cc: <sconz@listbot.com>
> > Sent: Wednesday, November 03, 1999 9:50 PM
> > Subject: RE: MKIII Speedo Converter - Speed Limiter?
> >
> >
> > > UK Supras Mailing List - http://www.supras.co.uk/
> > >
> > > Shane,
> > >
> > > 1:
> > > If there is a digital signal going into the ECU which represents the
> > > frequency of the rotation of the wheels (speed sensor) then you only
> need
> > > change this signal to remove the speed limit. Most MkIV's require to
be
> > > converted to MPH and you get a free 5:8 scaling of this signal so why
> not
> > > use it. You could get a simpler circuit to do a 1:2 scaling which
would
> > get
> > > roughly the same results. A simple PIC circuit could do it.
> > >
> > > 2:
> > > Also you could have a simple circuit to allow the correct frequency
> signal
> > > to enter the ECU just below the limiting speed but hold it at that
> > frequency
> > > for speeds above the normal limit. This is how Martin's speed limiter
> > works.
> > >
> > > So no you don't have to display MPH or clock up in MILES you only need
> > > change the input signal to the ECU. (This is going on experience with
> the
> > > MkIV).
> > >
> > > Method 1 or 2 are valid. Although some favour method 2 as the least
> > > intrusive for normal operation.
> > >
> > > Pete
> > >
> > >
> > > > -----Original Message-----
> > > > From: EXT Shane Plummer [mailto:splummer@wave.co.nz]
> > > >
> > > > I need to get my head around the simplicity of this.
> > > >
> > > > If the same technique was used on the MKIII digital dash
> > > > board / ECU, using
> > > > 5/8 frequency conversion unit.. this would also affectively
> > > > move speed fuel
> > > > cut from 180KM to 180Mph?
> > >
> > >
> > > ______________________________________________________________________
> > > To unsubscribe, write to uksupras-unsubscribe@listbot.com
> > > Start Your Own FREE Email List at http://www.listbot.com/
> > >
> >
> >
> > ______________________________________________________________________
> > To unsubscribe, write to sconz-unsubscribe@listbot.com
> > Start Your Own FREE Email List at http://www.listbot.com/
> >
>
>
> ______________________________________________________________________
> To unsubscribe, write to sconz-unsubscribe@listbot.com
> Start Your Own FREE Email List at http://www.listbot.com/
>


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Peter Hughes [s341435@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

Hi,
I can PIC code, but the easiest way I found was to use a simple PLD with the
gating idea you mentioned. The advantage of the PLD was I could just
duplicate the circuit. Why? Because that way I could use the same concept
for a fuel cut defender on my 7m. And I have PLDs lying around.

I have the logic drawn up for an Altera PLD. All I have to do now is borrow
the portable CRO from work and calibrate the little bugger. I tried this a
while ago and came to the conclusion that looking at a CRO trying to read
the frequency at the same time as you're driving at full boost (just below
the fuel cut) is BLOODY dangerous. I think I'll try it with a passenger next
time!

-pete
(unfortunately I cant get my hands on the CRO again until December) Could
always do it at a dyno shop tho'

----- Original Message -----
From: Marc Archbold <marc.a@xtra.co.nz>
To: Shane Plummer <splummer@wave.co.nz>; <sconz@listbot.com>
Date: Thursday, 4 November 1999 4:51
Subject: Re: MKIII Speedo Converter - Speed Limiter?


> Supra Club of New Zealand - http://www.econz.co.nz/~supras
>
> The 5/8 cct should work, I donot know if the speed signal is used by the
> ECU's map.... probably not, so this would well be worth a go, but only in
> manual trans.
>
> The best method is the one described that limits the number of pulses
> (frequency) seen by the ECU at 180km so that they donot increase above
> 180km.
> I have two ccts ideas, one limits the signal by frequency to voltage, then
> voltage to frequency conversion; and another simpler cct that gates a
'set'
> frequency once the speed threshold has been reached - so the ECU will not
> see more than say 180km/hr the threshold is set to 175km.
> The second cct is simpler, but would require fiddly calibration!
>
> Both of these ccts ideas have been drawn......more time please!
>
> Now only if my pic coding were up to it!
>
> -MA
> >
> > ARE WE GETTING WORM.......
> >
> > Come on guys (Over educated computer experts) it can be done.. If only
> know
> > anything about electronics!!
> >
> > Apparently our UK brothers have worked out a way to remove the speed cut
> for
> > very little money.
> >
> > Marc ??
> >
> > ----- Original Message -----
> > From: <peter.betts@nokia.com>
> > To: <uksupras@listbot.com>
> > Cc: <sconz@listbot.com>
> > Sent: Wednesday, November 03, 1999 9:50 PM
> > Subject: RE: MKIII Speedo Converter - Speed Limiter?
> >
> >
> > > UK Supras Mailing List - http://www.supras.co.uk/
> > >
> > > Shane,
> > >
> > > 1:
> > > If there is a digital signal going into the ECU which represents the
> > > frequency of the rotation of the wheels (speed sensor) then you only
> need
> > > change this signal to remove the speed limit. Most MkIV's require to
be
> > > converted to MPH and you get a free 5:8 scaling of this signal so why
> not
> > > use it. You could get a simpler circuit to do a 1:2 scaling which
would
> > get
> > > roughly the same results. A simple PIC circuit could do it.
> > >
> > > 2:
> > > Also you could have a simple circuit to allow the correct frequency
> signal
> > > to enter the ECU just below the limiting speed but hold it at that
> > frequency
> > > for speeds above the normal limit. This is how Martin's speed limiter
> > works.
> > >
> > > So no you don't have to display MPH or clock up in MILES you only need
> > > change the input signal to the ECU. (This is going on experience with
> the
> > > MkIV).
> > >
> > > Method 1 or 2 are valid. Although some favour method 2 as the least
> > > intrusive for normal operation.
> > >
> > > Pete
> > >
> > >
> > > > -----Original Message-----
> > > > From: EXT Shane Plummer [mailto:splummer@wave.co.nz]
> > > >
> > > > I need to get my head around the simplicity of this.
> > > >
> > > > If the same technique was used on the MKIII digital dash
> > > > board / ECU, using
> > > > 5/8 frequency conversion unit.. this would also affectively
> > > > move speed fuel
> > > > cut from 180KM to 180Mph?
> > >
> > >
> > > ______________________________________________________________________
> > > To unsubscribe, write to uksupras-unsubscribe@listbot.com
> > > Start Your Own FREE Email List at http://www.listbot.com/
> > >
> >
> >
> > ______________________________________________________________________
> > To unsubscribe, write to sconz-unsubscribe@listbot.com
> > Start Your Own FREE Email List at http://www.listbot.com/
>
>
> ______________________________________________________________________
> To unsubscribe, write to sconz-unsubscribe@listbot.com
> Start Your Own FREE Email List at http://www.listbot.com/
>


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Reply

Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Marc Archbold [marc.a@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

The 5/8 cct should work, I donot know if the speed signal is used by the
ECU's map.... probably not, so this would well be worth a go, but only in
manual trans.

The best method is the one described that limits the number of pulses
(frequency) seen by the ECU at 180km so that they donot increase above
180km.
I have two ccts ideas, one limits the signal by frequency to voltage, then
voltage to frequency conversion; and another simpler cct that gates a 'set'
frequency once the speed threshold has been reached - so the ECU will not
see more than say 180km/hr the threshold is set to 175km.
The second cct is simpler, but would require fiddly calibration!

Both of these ccts ideas have been drawn......more time please!

Now only if my pic coding were up to it!

-MA
>
> ARE WE GETTING WORM.......
>
> Come on guys (Over educated computer experts) it can be done.. If only
know
> anything about electronics!!
>
> Apparently our UK brothers have worked out a way to remove the speed cut
for
> very little money.
>
> Marc ??
>
> ----- Original Message -----
> From: <peter.betts@nokia.com>
> To: <uksupras@listbot.com>
> Cc: <sconz@listbot.com>
> Sent: Wednesday, November 03, 1999 9:50 PM
> Subject: RE: MKIII Speedo Converter - Speed Limiter?
>
>
> > UK Supras Mailing List - http://www.supras.co.uk/
> >
> > Shane,
> >
> > 1:
> > If there is a digital signal going into the ECU which represents the
> > frequency of the rotation of the wheels (speed sensor) then you only
need
> > change this signal to remove the speed limit. Most MkIV's require to be
> > converted to MPH and you get a free 5:8 scaling of this signal so why
not
> > use it. You could get a simpler circuit to do a 1:2 scaling which would
> get
> > roughly the same results. A simple PIC circuit could do it.
> >
> > 2:
> > Also you could have a simple circuit to allow the correct frequency
signal
> > to enter the ECU just below the limiting speed but hold it at that
> frequency
> > for speeds above the normal limit. This is how Martin's speed limiter
> works.
> >
> > So no you don't have to display MPH or clock up in MILES you only need
> > change the input signal to the ECU. (This is going on experience with
the
> > MkIV).
> >
> > Method 1 or 2 are valid. Although some favour method 2 as the least
> > intrusive for normal operation.
> >
> > Pete
> >
> >
> > > -----Original Message-----
> > > From: EXT Shane Plummer [mailto:splummer@wave.co.nz]
> > >
> > > I need to get my head around the simplicity of this.
> > >
> > > If the same technique was used on the MKIII digital dash
> > > board / ECU, using
> > > 5/8 frequency conversion unit.. this would also affectively
> > > move speed fuel
> > > cut from 180KM to 180Mph?
> >
> >
> > ______________________________________________________________________
> > To unsubscribe, write to uksupras-unsubscribe@listbot.com
> > Start Your Own FREE Email List at http://www.listbot.com/
> >
>
>
> ______________________________________________________________________
> To unsubscribe, write to sconz-unsubscribe@listbot.com
> Start Your Own FREE Email List at http://www.listbot.com/


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Reply

Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Shane Plummer [splummer@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

OK its late, I need my sleep

WARM!!!!!!!!!!!!!!!!!!



> ARE WE GETTING WORM.......
>
> Come on guys (Over educated computer experts) it can be done.. If only
know
> anything about electronics!!
>
> Apparently our UK brothers have worked out a way to remove the speed cut
for
> very little money.
>
> Marc ??
>
> ----- Original Message -----
> From: <peter.betts@nokia.com>
> To: <uksupras@listbot.com>
> Cc: <sconz@listbot.com>
> Sent: Wednesday, November 03, 1999 9:50 PM
> Subject: RE: MKIII Speedo Converter - Speed Limiter?
>
>
> > UK Supras Mailing List - http://www.supras.co.uk/
> >
> > Shane,
> >
> > 1:
> > If there is a digital signal going into the ECU which represents the
> > frequency of the rotation of the wheels (speed sensor) then you only
need
> > change this signal to remove the speed limit. Most MkIV's require to be
> > converted to MPH and you get a free 5:8 scaling of this signal so why
not
> > use it. You could get a simpler circuit to do a 1:2 scaling which would
> get
> > roughly the same results. A simple PIC circuit could do it.
> >
> > 2:
> > Also you could have a simple circuit to allow the correct frequency
signal
> > to enter the ECU just below the limiting speed but hold it at that
> frequency
> > for speeds above the normal limit. This is how Martin's speed limiter
> works.
> >
> > So no you don't have to display MPH or clock up in MILES you only need
> > change the input signal to the ECU. (This is going on experience with
the
> > MkIV).
> >
> > Method 1 or 2 are valid. Although some favour method 2 as the least
> > intrusive for normal operation.
> >
> > Pete
> >
> >
> > > -----Original Message-----
> > > From: EXT Shane Plummer [mailto:splummer@wave.co.nz]
> > >
> > > I need to get my head around the simplicity of this.
> > >
> > > If the same technique was used on the MKIII digital dash
> > > board / ECU, using
> > > 5/8 frequency conversion unit.. this would also affectively
> > > move speed fuel
> > > cut from 180KM to 180Mph?
> >
> >
> > ______________________________________________________________________
> > To unsubscribe, write to uksupras-unsubscribe@listbot.com
> > Start Your Own FREE Email List at http://www.listbot.com/
> >
>
>
> ______________________________________________________________________
> To unsubscribe, write to sconz-unsubscribe@listbot.com
> Start Your Own FREE Email List at http://www.listbot.com/
>


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Marc Archbold [Marc.A@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

>
> How about running 2 ECU in parallel, one runs the auto, one runs the
> engine, but they have different speed inputs?
>

Too costly, and a nightmare to install.
I like the idea of two XR-4151 V/F converters in a 'black box' :-)

-MA


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RE: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Tony Bryant [tony.bryant@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

>
> Come on guys (Over educated computer experts) it can be
> done.. If only know
> anything about electronics!!
>
> Apparently our UK brothers have worked out a way to remove
> the speed cut for
> very little money.
>

How about running 2 ECU in parallel, one runs the auto, one runs the
engine, but they have different speed inputs?


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Murray [triplem@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

Just a comment here from one who can't make head nor tail of all this
jargon:-) at the moment anyway. I have just got a pulse changer which should
fit in between the ecu and the speed sensor. I will let you know what
happens. The main problem I see is that the ecu will think its doing 30 km's
when its doing 120km's. Will this cause a problem with fuel delivered or
not? I await any input, and if anyone can tell me if the MPH thing works,
then I will do that on my manual car.

MMM
----- Original Message -----
From: Marc Archbold <Marc.A@xtra.co.nz>
To: Craig Tonkin <Craig.Tonkin@directories.co.nz>; Shane Plummer
<splummer@wave.co.nz>
Cc: <sconz@listbot.com>
Date: Wednesday, November 03, 1999 3:40 PM
Subject: Re: MKIII Speedo Converter - Speed Limiter?


> Supra Club of New Zealand - http://www.econz.co.nz/~supras
>
>
> > Is this the case
> > If so BUGGER
> > Shane - you have two days to find a way to do this for an Auto :-)
> >
> Yep unfortunately :-(....... If you have a diagram of your 3.0T; check
to
> see if it has a separate ECT that the speed signal is split between it and
> the ECU. If it is split you may be able to cut only the speed signal wire
> to the ECU and add your cct here.....
>
> Sorry folks, I have not yet completed my speed cut lifter cct.....
>
> -MA
>
>
> ______________________________________________________________________
> To unsubscribe, write to sconz-unsubscribe@listbot.com
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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Stuart Woolford [stuartw@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras



On Wed, 3 Nov 1999, Murray wrote:

> Supra Club of New Zealand - http://www.econz.co.nz/~supras
>
> It is alright to go to sleep you know? :-)
>
> MMM

This early? it's not even AM yet!


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Murray [triplem@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

It is alright to go to sleep you know? :-)

MMM
----- Original Message -----
From: Shane Plummer <splummer@wave.co.nz>
To: Shane Plummer <splummer@wave.co.nz>; <sconz@listbot.com>
Date: Wednesday, November 03, 1999 10:44 PM
Subject: Re: MKIII Speedo Converter - Speed Limiter?


> Supra Club of New Zealand - http://www.econz.co.nz/~supras
>
> OK its late, I need my sleep
>
> WARM!!!!!!!!!!!!!!!!!!
>
>
>
> > ARE WE GETTING WORM.......
> >
> > Come on guys (Over educated computer experts) it can be done.. If only
> know
> > anything about electronics!!
> >
> > Apparently our UK brothers have worked out a way to remove the speed cut
> for
> > very little money.
> >
> > Marc ??
> >
> > ----- Original Message -----
> > From: <peter.betts@nokia.com>
> > To: <uksupras@listbot.com>
> > Cc: <sconz@listbot.com>
> > Sent: Wednesday, November 03, 1999 9:50 PM
> > Subject: RE: MKIII Speedo Converter - Speed Limiter?
> >
> >
> > > UK Supras Mailing List - http://www.supras.co.uk/
> > >
> > > Shane,
> > >
> > > 1:
> > > If there is a digital signal going into the ECU which represents the
> > > frequency of the rotation of the wheels (speed sensor) then you only
> need
> > > change this signal to remove the speed limit. Most MkIV's require to
be
> > > converted to MPH and you get a free 5:8 scaling of this signal so why
> not
> > > use it. You could get a simpler circuit to do a 1:2 scaling which
would
> > get
> > > roughly the same results. A simple PIC circuit could do it.
> > >
> > > 2:
> > > Also you could have a simple circuit to allow the correct frequency
> signal
> > > to enter the ECU just below the limiting speed but hold it at that
> > frequency
> > > for speeds above the normal limit. This is how Martin's speed limiter
> > works.
> > >
> > > So no you don't have to display MPH or clock up in MILES you only need
> > > change the input signal to the ECU. (This is going on experience with
> the
> > > MkIV).
> > >
> > > Method 1 or 2 are valid. Although some favour method 2 as the least
> > > intrusive for normal operation.
> > >
> > > Pete
> > >
> > >
> > > > -----Original Message-----
> > > > From: EXT Shane Plummer [mailto:splummer@wave.co.nz]
> > > >
> > > > I need to get my head around the simplicity of this.
> > > >
> > > > If the same technique was used on the MKIII digital dash
> > > > board / ECU, using
> > > > 5/8 frequency conversion unit.. this would also affectively
> > > > move speed fuel
> > > > cut from 180KM to 180Mph?
> > >
> > >
> > > ______________________________________________________________________
> > > To unsubscribe, write to uksupras-unsubscribe@listbot.com
> > > Start Your Own FREE Email List at http://www.listbot.com/
> > >
> >
> >
> > ______________________________________________________________________
> > To unsubscribe, write to sconz-unsubscribe@listbot.com
> > Start Your Own FREE Email List at http://www.listbot.com/
> >
>
>
> ______________________________________________________________________
> To unsubscribe, write to sconz-unsubscribe@listbot.com
> Start Your Own FREE Email List at http://www.listbot.com/
>


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:12:00 <Shane Plummer [splummer@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

Do you want one... I have a few in the garage I'm selling....

$250 gets you a P133, 24RAM, 350 HDD
$200 Gets you a 486 100Mhz /
$225 Gets P75Mhz, 540 Mb HDD, 32MB RAM
$175 Gets you a 486 486 DX66
$60 Gets you on the internet with a 56K modem

PC Direct label


----- Original Message -----
From: Craig Tonkin <Craig.Tonkin@directories.co.nz>
To: 'Murray' <triplem@xtra.co.nz>; Shane Plummer <splummer@wave.co.nz>;
<sconz@listbot.com>
Date: Thursday, November 04, 1999 8:36 AM
Subject: RE: MKIII Speedo Converter - Speed Limiter?


> I am bloody glad I don't have a PC at home otherwise I would be online
until
> late hours :-)
>
> -----Original Message-----
> From: Murray [mailto:triplem@xtra.co.nz]
> Sent: Wednesday, November 03, 1999 11:01 PM
> To: Shane Plummer; sconz@listbot.com
> Subject: Re: MKIII Speedo Converter - Speed Limiter?
>
>
> Supra Club of New Zealand - http://www.econz.co.nz/~supras
>
> It is alright to go to sleep you know? :-)
>
> MMM
> ----- Original Message -----
> From: Shane Plummer <splummer@wave.co.nz>
> To: Shane Plummer <splummer@wave.co.nz>; <sconz@listbot.com>
> Sent: Wednesday, November 03, 1999 10:44 PM
> Subject: Re: MKIII Speedo Converter - Speed Limiter?
>
>
> > Supra Club of New Zealand - http://www.econz.co.nz/~supras
> >
> > OK its late, I need my sleep
> >
> > WARM!!!!!!!!!!!!!!!!!!
> >
> >
> >
> > > ARE WE GETTING WORM.......
> > >
> > > Come on guys (Over educated computer experts) it can be done.. If only
> > know
> > > anything about electronics!!
> > >
> > > Apparently our UK brothers have worked out a way to remove the speed
cut
> > for
> > > very little money.
> > >
> > > Marc ??
> > >
> > > ----- Original Message -----
> > > From: <peter.betts@nokia.com>
> > > To: <uksupras@listbot.com>
> > > Cc: <sconz@listbot.com>
> > > Sent: Wednesday, November 03, 1999 9:50 PM
> > > Subject: RE: MKIII Speedo Converter - Speed Limiter?
> > >
> > >
> > > > UK Supras Mailing List - http://www.supras.co.uk/
> > > >
> > > > Shane,
> > > >
> > > > 1:
> > > > If there is a digital signal going into the ECU which represents the
> > > > frequency of the rotation of the wheels (speed sensor) then you only
> > need
> > > > change this signal to remove the speed limit. Most MkIV's require to
> be
> > > > converted to MPH and you get a free 5:8 scaling of this signal so
why
> > not
> > > > use it. You could get a simpler circuit to do a 1:2 scaling which
> would
> > > get
> > > > roughly the same results. A simple PIC circuit could do it.
> > > >
> > > > 2:
> > > > Also you could have a simple circuit to allow the correct frequency
> > signal
> > > > to enter the ECU just below the limiting speed but hold it at that
> > > frequency
> > > > for speeds above the normal limit. This is how Martin's speed
limiter
> > > works.
> > > >
> > > > So no you don't have to display MPH or clock up in MILES you only
need
> > > > change the input signal to the ECU. (This is going on experience
with
> > the
> > > > MkIV).
> > > >
> > > > Method 1 or 2 are valid. Although some favour method 2 as the least
> > > > intrusive for normal operation.
> > > >
> > > > Pete
> > > >
> > > >
> > > > > -----Original Message-----
> > > > > From: EXT Shane Plummer [mailto:splummer@wave.co.nz]
> > > > >
> > > > > I need to get my head around the simplicity of this.
> > > > >
> > > > > If the same technique was used on the MKIII digital dash
> > > > > board / ECU, using
> > > > > 5/8 frequency conversion unit.. this would also affectively
> > > > > move speed fuel
> > > > > cut from 180KM to 180Mph?
> > > >
> > > >
> > > >
______________________________________________________________________
> > > > To unsubscribe, write to uksupras-unsubscribe@listbot.com
> > > > Start Your Own FREE Email List at http://www.listbot.com/
> > > >
> > >
> > >
> > > ______________________________________________________________________
> > > To unsubscribe, write to sconz-unsubscribe@listbot.com
> > > Start Your Own FREE Email List at http://www.listbot.com/
> > >
> >
> >
> > ______________________________________________________________________
> > To unsubscribe, write to sconz-unsubscribe@listbot.com
> > Start Your Own FREE Email List at http://www.listbot.com/
> >
>
>
> ______________________________________________________________________
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>


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:13:00 <Marc Archbold [marc.a@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

Hi all,
Built a working version of my speed cut lifter, its a 'gating' type in which
you set a preset speed threshold and when it is reached it switches to a
presentable *fixed* output.
The frequencies: 0.71Hz per Km/hr, which is approx the same for my 92 Soarer
as for the MkIII Supra. The only differences here is a +12v bias for the
Soarer, while the Mk3 Supra is +5v, which is pulled low by the speed sensor.

The Soarer is an automatic, as with all V8 Lexus SC400/Soarer.

I set my threshold for ~170Km/hr with a 'fixed output' 170Km/hr. Tested on
the bench it worked perfectly; an unmodified speed signal all the way up to
the threshold, and then snap to the 'fixed' output with no change, until I
went under the threshold.
Using the factory wiring diagrams I connected it into the ECU/ECT....and
test drove it (eeck - on axle stands - of course ;-) unfortunately the
&*^*@% speed cut still hit at 180Km/hr. I re-checked it all using a
frequency counter and an oscilloscope.... the circuit delivered the 'fixed
frequency' at the threshold ok...but still speed cut. I then connected the
circuit at the entry of the speed sensor wires and sure enough the digital
dash would read out the 'fixed frequency' at threshold, but you could still
feel the speed cut, at ~4000Rpm.
Interestingly you could still feel the speed cut even with the speed sensor
wire disconnected....at ~4000. It looks like the speed sensor wire is not
the only 'source' for speed cut..... any feedback/ideas would be
appreciated!

The upside is that this should work perfectly in a MK3 manual!

Frustrated,
Marc A.


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:13:00 <Marc Archbold [Marc.A@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

After a bit of work last night, I finally have a schematic for a 'Speed cut
lifter'.
It uses a gating principle, so it does not have any effect on the speed
signal *until* limiting occurs, whereby it gates a fixed ratio/adjustable
'limit' frequency; making it look to the ECU, like you are not going any
faster. (555's are really versatile!)
It uses two adjustments 'pots'
1) Threshold or limit point
2) 'trick' output frequency on limit.

Initially I will set this up on my Soarer and make any modifications, if
required, to run on Lee Dobsons 1g-gte MK2 (assuming we get it up and
running :-) which should closely mimick the pulses as for the MK3's. This
will be required if the output pulse width period are different - i'll bet
they are quite close.

So Im guessing around 3-4 wks all go.......

-MA (Very optimistic!)


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:13:00 <Marc Archbold [marc.a@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

> see who won over the last two days. There is possibly two sensors in the
> auto itself, not sure where but will try and find out for you.
>
> MMM
> ----- Original Message -----

Thanks Stuart and Murray. Having a look at the ECT diagram, yep there are
two speed (actually three, but the other does not have any effect on speed
limiter).
After an email to a friend in Australia who sells speed cut lifters for the
Soarer, it looks like the SP2 sensor on the trans has to be switched *out*
when limiting occurs. Im hoping this is the case, and
I dont have emulate another signal!!
Stuart - on your JZ - does it do something like this or just interrupt one
of the speed signals?

Looks like its back to the axle stands for another run tommorow night.

-MA


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:13:00 <Marc Archbold [marc.a@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras


> Mark, was this tested in your soarer or a MkIII? The Soarer's have 4!!
speed

On my 92 Soarer

> take off's from previous experience. 2 are easy to find, but 2 are
> apparently difficult to get rid of.

I 'tapped' straight in to the ECU/ECT, is it possible that the trans is
providing some sort of feedback?
Ive been over the diagrams, have sussed out most of the ECU connections, but
im not sure of the ECT part of the ECU. What are the 'other 2 parts'?

-MA

> MMM
> ----- Original Message -----
> From: Marc Archbold <marc.a@xtra.co.nz>
> To: <sconz@listbot.com>
> Sent: Sunday, November 14, 1999 10:57 PM
> Subject: Re: MKIII Speedo Converter - Speed Limiter?
>
>
> > Supra Club of New Zealand - http://www.econz.co.nz/~supras
> >
> > Hi all,
> > Built a working version of my speed cut lifter, its a 'gating' type in
> which
> > you set a preset speed threshold and when it is reached it switches to a
> > presentable *fixed* output.
> > The frequencies: 0.71Hz per Km/hr, which is approx the same for my 92
> Soarer
> > as for the MkIII Supra. The only differences here is a +12v bias for
the
> > Soarer, while the Mk3 Supra is +5v, which is pulled low by the speed
> sensor.
> >
> > The Soarer is an automatic, as with all V8 Lexus SC400/Soarer.
> >
> > I set my threshold for ~170Km/hr with a 'fixed output' 170Km/hr. Tested
> on
> > the bench it worked perfectly; an unmodified speed signal all the way up
> to
> > the threshold, and then snap to the 'fixed' output with no change, until
I
> > went under the threshold.
> > Using the factory wiring diagrams I connected it into the ECU/ECT....and
> > test drove it (eeck - on axle stands - of course ;-) unfortunately the
> > &*^*@% speed cut still hit at 180Km/hr. I re-checked it all using a
> > frequency counter and an oscilloscope.... the circuit delivered the
'fixed
> > frequency' at the threshold ok...but still speed cut. I then connected
> the
> > circuit at the entry of the speed sensor wires and sure enough the
digital
> > dash would read out the 'fixed frequency' at threshold, but you could
> still
> > feel the speed cut, at ~4000Rpm.
> > Interestingly you could still feel the speed cut even with the speed
> sensor
> > wire disconnected....at ~4000. It looks like the speed sensor wire is
not
> > the only 'source' for speed cut..... any feedback/ideas would be
> > appreciated!
> >
> > The upside is that this should work perfectly in a MK3 manual!
> >
> > Frustrated,
> > Marc A.
> >
> >
> > ______________________________________________________________________
> > To unsubscribe, write to sconz-unsubscribe@listbot.com
> > Start Your Own FREE Email List at http://www.listbot.com/
>


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:13:00 <Murray [triplem@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

Mark, was this tested in your soarer or a MkIII? The Soarer's have 4!! speed
take off's from previous experience. 2 are easy to find, but 2 are
apparently difficult to get rid of.

MMM
----- Original Message -----
From: Marc Archbold <marc.a@xtra.co.nz>
To: <sconz@listbot.com>
Date: Sunday, November 14, 1999 10:57 PM
Subject: Re: MKIII Speedo Converter - Speed Limiter?


> Supra Club of New Zealand - http://www.econz.co.nz/~supras
>
> Hi all,
> Built a working version of my speed cut lifter, its a 'gating' type in
which
> you set a preset speed threshold and when it is reached it switches to a
> presentable *fixed* output.
> The frequencies: 0.71Hz per Km/hr, which is approx the same for my 92
Soarer
> as for the MkIII Supra. The only differences here is a +12v bias for the
> Soarer, while the Mk3 Supra is +5v, which is pulled low by the speed
sensor.
>
> The Soarer is an automatic, as with all V8 Lexus SC400/Soarer.
>
> I set my threshold for ~170Km/hr with a 'fixed output' 170Km/hr. Tested
on
> the bench it worked perfectly; an unmodified speed signal all the way up
to
> the threshold, and then snap to the 'fixed' output with no change, until I
> went under the threshold.
> Using the factory wiring diagrams I connected it into the ECU/ECT....and
> test drove it (eeck - on axle stands - of course ;-) unfortunately the
> &*^*@% speed cut still hit at 180Km/hr. I re-checked it all using a
> frequency counter and an oscilloscope.... the circuit delivered the 'fixed
> frequency' at the threshold ok...but still speed cut. I then connected
the
> circuit at the entry of the speed sensor wires and sure enough the digital
> dash would read out the 'fixed frequency' at threshold, but you could
still
> feel the speed cut, at ~4000Rpm.
> Interestingly you could still feel the speed cut even with the speed
sensor
> wire disconnected....at ~4000. It looks like the speed sensor wire is not
> the only 'source' for speed cut..... any feedback/ideas would be
> appreciated!
>
> The upside is that this should work perfectly in a MK3 manual!
>
> Frustrated,
> Marc A.
>
>
> ______________________________________________________________________
> To unsubscribe, write to sconz-unsubscribe@listbot.com
> Start Your Own FREE Email List at http://www.listbot.com/


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:14:00 <Marc Archbold [marc.a@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras


> > Stuart - on your JZ - does it do something like this or just interrupt
one
> > of the speed signals?
>
> it places a hard upper frequency limit on one of the speed signals to the
> ECU (there are only 2 I believe on the JZA70)
>
> interrupting one of the signals is asking to put the ECU into a limp mode,
> IMHO..

Hi Stuart,
As long as one signal exists and the Trans is in top gear, it does not put
the ECU into limp mode. The Soarer's diagnostics seem extremely sensitive -
any fault is immediately reported on the Diagnostic LCD (or EMV Touch
screen). Even forcing the ECU into diag. mode after testing the delimiter
proved no codes had been set. According to a freiend in Australia who had
these developed for him commercially, "The SP2 is used as a back up for the
transmission. The delimiter must still limit the top speed seen by the ECU
into the main speed sensor input" - which is exactly what my delimiter does.
As I had found, only when I disconnected both the SP2 & SP IN did the car
not shift out of first gear, and only when the main speed sensor is
disconnected, and the SP2 connected did the ECU signal *trouble*.

Cheers,
Marc A.


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:14:00 <Stuart Woolford [stuartw@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras

I know that the JZA70 2.5tt supra has 2 speed signals to the ECU, and my
speed cut limit remover works fine just gateing one of them, so it should
just be a matter of identifying which one..


On Sun, 14 Nov 1999, Murray wrote:

> Supra Club of New Zealand - http://www.econz.co.nz/~supras
>
> Mark, was this tested in your soarer or a MkIII? The Soarer's have 4!! speed
> take off's from previous experience. 2 are easy to find, but 2 are
> apparently difficult to get rid of.
>
> MMM
> ----- Original Message -----
> From: Marc Archbold <marc.a@xtra.co.nz>
> To: <sconz@listbot.com>
> Sent: Sunday, November 14, 1999 10:57 PM
> Subject: Re: MKIII Speedo Converter - Speed Limiter?
>
>
> > Supra Club of New Zealand - http://www.econz.co.nz/~supras
> >
> > Hi all,
> > Built a working version of my speed cut lifter, its a 'gating' type in
> which
> > you set a preset speed threshold and when it is reached it switches to a
> > presentable *fixed* output.
> > The frequencies: 0.71Hz per Km/hr, which is approx the same for my 92
> Soarer
> > as for the MkIII Supra. The only differences here is a +12v bias for the
> > Soarer, while the Mk3 Supra is +5v, which is pulled low by the speed
> sensor.
> >
> > The Soarer is an automatic, as with all V8 Lexus SC400/Soarer.
> >
> > I set my threshold for ~170Km/hr with a 'fixed output' 170Km/hr. Tested
> on
> > the bench it worked perfectly; an unmodified speed signal all the way up
> to
> > the threshold, and then snap to the 'fixed' output with no change, until I
> > went under the threshold.
> > Using the factory wiring diagrams I connected it into the ECU/ECT....and
> > test drove it (eeck - on axle stands - of course ;-) unfortunately the
> > &*^*@% speed cut still hit at 180Km/hr. I re-checked it all using a
> > frequency counter and an oscilloscope.... the circuit delivered the 'fixed
> > frequency' at the threshold ok...but still speed cut. I then connected
> the
> > circuit at the entry of the speed sensor wires and sure enough the digital
> > dash would read out the 'fixed frequency' at threshold, but you could
> still
> > feel the speed cut, at ~4000Rpm.
> > Interestingly you could still feel the speed cut even with the speed
> sensor
> > wire disconnected....at ~4000. It looks like the speed sensor wire is not
> > the only 'source' for speed cut..... any feedback/ideas would be
> > appreciated!
> >
> > The upside is that this should work perfectly in a MK3 manual!
> >
> > Frustrated,
> > Marc A.
> >
> >
> > ______________________________________________________________________
> > To unsubscribe, write to sconz-unsubscribe@listbot.com
> > Start Your Own FREE Email List at http://www.listbot.com/
>
>
> ______________________________________________________________________
> To unsubscribe, write to sconz-unsubscribe@listbot.com
> Start Your Own FREE Email List at http://www.listbot.com/
>


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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:14:00 <Marc Archbold [Marc.A@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras


> I know that the JZA70 2.5tt supra has 2 speed signals to the ECU, and my
> speed cut limit remover works fine just gateing one of them, so it should
> just be a matter of identifying which one..
>
Are they derived from the Speedo speed sensor, that is for the dash
speedometer? I have the diagrams for the ECU/ECT if anyone wants a look -
the more heads the better!

The other point I have noticed is that Toyota's speed signal wire to the ECU
is always pink! Nice colour :-b

-MA
> On Sun, 14 Nov 1999, Murray wrote:
>
> > Supra Club of New Zealand - http://www.econz.co.nz/~supras
> >
> > Mark, was this tested in your soarer or a MkIII? The Soarer's have 4!!
speed
> > take off's from previous experience. 2 are easy to find, but 2 are
> > apparently difficult to get rid of.
> >
> > MMM
> > ----- Original Message -----
> > From: Marc Archbold <marc.a@xtra.co.nz>
> > To: <sconz@listbot.com>
> > Sent: Sunday, November 14, 1999 10:57 PM
> > Subject: Re: MKIII Speedo Converter - Speed Limiter?
> >
> >
> > > Supra Club of New Zealand - http://www.econz.co.nz/~supras
> > >
> > > Hi all,
> > > Built a working version of my speed cut lifter, its a 'gating' type in
> > which
> > > you set a preset speed threshold and when it is reached it switches to
a
> > > presentable *fixed* output.
> > > The frequencies: 0.71Hz per Km/hr, which is approx the same for my 92
> > Soarer
> > > as for the MkIII Supra. The only differences here is a +12v bias for
the
> > > Soarer, while the Mk3 Supra is +5v, which is pulled low by the speed
> > sensor.
> > >
> > > The Soarer is an automatic, as with all V8 Lexus SC400/Soarer.
> > >
> > > I set my threshold for ~170Km/hr with a 'fixed output' 170Km/hr.
Tested
> > on
> > > the bench it worked perfectly; an unmodified speed signal all the way
up
> > to
> > > the threshold, and then snap to the 'fixed' output with no change,
until I
> > > went under the threshold.
> > > Using the factory wiring diagrams I connected it into the
ECU/ECT....and
> > > test drove it (eeck - on axle stands - of course ;-) unfortunately the
> > > &*^*@% speed cut still hit at 180Km/hr. I re-checked it all using a
> > > frequency counter and an oscilloscope.... the circuit delivered the
'fixed
> > > frequency' at the threshold ok...but still speed cut. I then
connected
> > the
> > > circuit at the entry of the speed sensor wires and sure enough the
digital
> > > dash would read out the 'fixed frequency' at threshold, but you could
> > still
> > > feel the speed cut, at ~4000Rpm.
> > > Interestingly you could still feel the speed cut even with the speed
> > sensor
> > > wire disconnected....at ~4000. It looks like the speed sensor wire is
not
> > > the only 'source' for speed cut..... any feedback/ideas would be
> > > appreciated!
> > >
> > > The upside is that this should work perfectly in a MK3 manual!
> > >
> > > Frustrated,
> > > Marc A.
> > >
> > >
> > > ______________________________________________________________________
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> >
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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:14:00 <Stuart Woolford [stuartw@...>
Supra Club of New Zealand - http://www.econz.co.nz/~supras



On Mon, 15 Nov 1999, Marc Archbold wrote:

> Supra Club of New Zealand - http://www.econz.co.nz/~supras
>
> > see who won over the last two days. There is possibly two sensors in the
> > auto itself, not sure where but will try and find out for you.
> >
> > MMM
> > ----- Original Message -----
>
> Thanks Stuart and Murray. Having a look at the ECT diagram, yep there are
> two speed (actually three, but the other does not have any effect on speed
> limiter).
> After an email to a friend in Australia who sells speed cut lifters for the
> Soarer, it looks like the SP2 sensor on the trans has to be switched *out*
> when limiting occurs. Im hoping this is the case, and
> I dont have emulate another signal!!
> Stuart - on your JZ - does it do something like this or just interrupt one
> of the speed signals?

it places a hard upper frequency limit on one of the speed signals to the
ECU (there are only 2 I believe on the JZA70)

interrupting one of the signals is asking to put the ECU into a limp mode,
IMHO..

>
> Looks like its back to the axle stands for another run tommorow night.
>
> -MA
>
>
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