[jaykay]

Originally Posted by itsnotanova

What's the diameter of your exhaust system? The the biggest problem with the 986 exhaust system is that it's way too small. That's why I used a 987 muffler. It's the same diameter as the 996


JayKay,
He lives in an area with emissions and has the pre-cats but not the secondary cats. He said he had to send his DME off to some place out in Germany but didn't tell me much more. He believes there's a quicker throttle response with the larger 74 mm throttle body.

Thanks Woody,

I am surprised that the 3.2 is up to 290 with cats in the headers......and stock air box