I believe i have the NPP i have the 1LT with dual mode performance exhaust.... 2 pipes on both sides.... I have a nice little growl and when i open it up it has an even better growl... but i want a meaner growl. Would this MRT axle back benefit me in the case and also would I go from the dual pipes on both sides to just one? Also do i need the CAI? I was talking to my guy about that last night. He is a Mechanic... still learning. He says that the CAI lets more particles in and eventually that they(the particles) could mess up the piston walls...Is this tru and if so is the CAI necessary?
