I would have to disagree. I got an Arospeed N1. I love it. They are quality (i.e all stainless construction with perforated core). Any muffler will sound like crap with a gutted cat and stock piping. Thats what all those ricers are running. I installed custom bent 2.25 cat-back piping with a resonator and it sounds great. It is a little louder than stock with a nice low rumble. With the silencer it sounds just like stock.

just my 2cents