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Re: MKIII Speedo Converter - Speed Limiter?   2001-08-02 16:11:00 <Marc Archbold [Marc.A@...>
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
> >
> >
> > ______________________________________________________________________
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> >
>
>
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