| exhausts aren't really going to have a HUGE sound difference. They all sound good if you go with a name brand, and basically do the same thing(give the same gains which are not extremely noticeable). I have the UUC complete exhaust for my car and it is loud!!, but I've heard that other exhausts like AA are loud as well. i also have 2.5" piping and no cats at all. It's mainly personal opinion really. find something you like the look of especially.
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