but my Dc cat back is the shit as far as "nice sound" goes Umm i wasnt looking for a quiet exhaust in the first place, but the resonator is big and it does make a nice almost quiet sound at low Rpm's , but then when i open my bitch up i can hear it complimenting the CAI so well, no cops got to be around anyway! so my opinion is if you got a Cold air intake, you already are loud in the high range, so might as well had an exhaust and who cares if its loud, you'll be deaf from the intake if not the exhaust=)if you have something thats not too loud for an intake, or stock, then forget this whole post