arod6692 Posted November 22, 2012 Report Share Posted November 22, 2012 (edited) alrite guys ive read a million threads on this. But i still have a few questions and correct me if any of this is no good. but i think im gonna run 2.5 exhaust with a l/t header which is better from what ive gathered and a magnaflow x pipe to some flowmaster mufflers. Also what size header 1 3/4 1 1/2 or what? I currently have 40series coming out in front of rear tire with siverline tips. Now has anybody ran the race 10 series flowmaster mufflers on these trucks. I have them on my gnx and they sound wicked. But i still have to pass emissions as well and thats my other questions if i remove the cats and tune will it pass I live in IL buy the way and also would i get better power and sound from removeing the cats or putting on hi flow cats. If you have anything to add please do so and thanks for the help. Edited November 22, 2012 by arod6692 (see edit history) Quote Link to comment Share on other sites More sharing options...
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