I am assuming you are the same Thomas who posted the suspenion question from Norway. The Jim C chip was designed to be used with the US car and not the European cars. Due to the emission controls in the states the two cars had different setups, the Jim C chip makes the most of the conservative US setup. I don't think it will show the same improvements on a Euro car. To get your Euro car flying you may need to do a bit more, cams, head and chip to match. On the exhaust side of things, forget the claims by exhaust mans. they are pretty much all tosh and do not show up on the rolling road. One exhaust to steer clear of is the Scorpion, nasty, noisy, restrictive load of rubbish. I had one and junked it, I now have a Supersprint.

Roops.

any opinions on chips for a 1988 German m3?
Is GIAC any good, or are ther any other that are better?

What do you have?

You know of any German chips better than the US ones?

Exhausts for M3?
what dimentions, manufacturers?

Cheers,

Thomas