scupking
Active Member
I agree that these cars sound much better with a catted pipe. My buddy has an 05 and he ran an O/R pipe for about a year and couldn't stand it anymore. So he had high flow cats welded in. As for the X pipe comment I think a catted X with stingers sounds best on the s197. Just take a listen to this video YouTube - 05 Mustang GT Exhaust - Magnaflow Catted X Pipe