Originally posted by AccordSleeper
my apexi ws is still quiet with a carsound cat. my old exhaust got very raspy and annoying though after the high flow cat.
Was the high flow cat. on your last system made bty Carsound? Many "high flow" cats that places sell are crap and are just cheap glasspacks or even test tubes... which will make your exhaust sound horrible. IMO Carsound is the only way to go. And you can get a universal 2.25" one for under $100.