I was just looking around at whats out there I need a new car. I just decided to post don't mind me.
But anyways for the dual exhaust. You would have to run a quasi dual set up, That would keep most of your performance. It's all related to the amount of backpressure the engine needs, all cars can benifit from a bigger daul exhaust it just depands how big the pipes are.
This thing has a 2.0 that revs to about 6000, right. Optimal exhaust should be about a 2 1/4 inch single pipe. Or a quasi dual set up with a 2 1\4 inch main pipe and 2 inch Y pipe at the back.
anyways just passing through, So gimmie the low down on these. One question so I can visualize, stock for stock P5 vs. honda civic not the Si.