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Fw: 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

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>
Date: 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?
>
>
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