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91 vw gti no tach plz help

Posted: Wed Aug 12, 2009 1:54 pm
by mk2_20v
So i have a 91 vw gti with a 20v swap and megasquirt running gm dual tower coils and i cant seem to find any info on geting the tach to function...

Re: 91 vw gti no tach plz help

Posted: Thu Aug 13, 2009 6:07 am
by Matt Cramer
Do you have a 60-2 crank wheel?

Re: 91 vw gti no tach plz help

Posted: Fri Aug 21, 2009 3:20 pm
by mk2_20v
its a stock 1.8t crank trigger i think that sounds right

Re: 91 vw gti no tach plz help

Posted: Mon Aug 24, 2009 6:37 am
by Matt Cramer
You might be able to use an off the shelf tach adapter. Or you could add a tach output to the MS - what code version do you have?

Re: 91 vw gti no tach plz help

Posted: Mon Aug 24, 2009 10:27 am
by mk2_20v
i dont remember what version it is ill have to check again and i do have a tach output set up but im having a problem finding what resistor to use to get it working correctly. right now i can connect an aftermarket tach and it will work.

Re: 91 vw gti no tach plz help

Posted: Tue Aug 25, 2009 12:36 pm
by mk2_20v
cant seem to find much info on this and its really annoying not having a tach. :?