I had to gut my stock cat after it got clogged, put a $220 Random Tech on to pass emissions and then immediatly regutted it. My car sounded so much better with no cats it wasnt even funny. I dont know why anyone would want the muffled pansy exhaust note that a cat gives our car. Loudmouth is only raspier with no cat because it has no muffler. Any mufflered system and probably especially the GMMG will sound as well as perform better.

 

No cat sounds awesome to me. Just a little loud, but I don't mind. I always set off car alarms here .