I have a '95 Formula A4 with 3.23's. I got that performance shift button that I never use and I was wondering what that button actually does and does it work? thanks!

 

Try using it and you will know ...

 

i really couldnt try it out today but i noticed that the shifts seemed a little more firm

 

anyone know exactly what the button does?

 

Dude, I tried to tell you that if you use it you will know, but apparently you want somebody to tell you rather than find out for yourself. Basically in performance mode, it raises upshift points higher in the rpm band, enables faster shift times and harder shifts, and commands downshifts at lesser throttle and higher speeds. The button causes the PCM to select an entirely different shift table. My 94 Formula had it and the difference was pronounced.

 

thanks for the explanation and I am unable to test it as it has been thunderstorming like a **** here lately and i havent had the time to mess around with it

 

Wish my LT1 had that, it never goes above 4500 RPM's .

 

I removed mine, and used it for a line lock button instead. Reprogrammed the pcm to use the "performance" shift table all the time.

 

Thats a good idea. I just was able to test the button this morning and holy crap it really made a pronounced difference!

 

hey does this button have any effects when U launch off the line? Cause it seems to work better without it on off the line. I dunno its weird it seems that without it on I can rev my engine higher before the tires spin to get a better launch, but with it on it seems I cant rev as much and the tires spin sooner.

 

it also raises the line pressure with the pressure control soleniod.....on thatsame solenoid you can turn the torx bolt on it that is behind the plug 1/4 turn to the right (no more than that) and it will make it even harsher