Quote:
Originally Posted by axis
I realize they are big but they are far from restrictive. Find that pic and trace it out. It's a straight through design with a helmholtz tube in the big suitcase. Why do you think there is little to nothing to be gained, in terms of HP, from a aftermarket exhaust. Catbacks/axlebacks are for sound, headers are for power.  |
I can't find that picture but from what I remember theres the 2 mid pipes after the catalytic conv that go into the resonator and in the resonator it's just like another muffler and on the other end there's the 2 other pipes that lead out to the mufflers .. all that exhaust has to build up more to be pushed out of the resonator than through an xpipe. which is why the stock exaust is so quiet. with the xpipe it just goes straight through.
maybe I'm wrong but I still think my catback allows for better flow..
unless my car magically decided to get better milage, coincidentally at the same time I installed the exhaust
