Originally Posted by JPK

The best exhaust for F/I cars is no exhaust. Meaning, the quicker the exhaust can exit, the better.

I currently have the entire exhaust system a 2.5". I'm not gonna go 3" though. I'm getting one of these instead.

http://quicktimeperformance.com/QTEC/index.html

I'm planning on putting it between the cat and the resonator. That way, it only has to go through the header and cat (which is pretty high flow stock BTW). Should be pretty ******* awesome and scare the **** out of some little rice boys as well as yield a decent power gain too.