B Billy Guest May 19, 2004 #1 I have recently had an ASCAR backbox fitted to my 1.2 yet can't hear it above my K'n'N (which is really loud) would it be worth upgradeing to a cat back for sound and any power gains.
I have recently had an ASCAR backbox fitted to my 1.2 yet can't hear it above my K'n'N (which is really loud) would it be worth upgradeing to a cat back for sound and any power gains.
