G
Guest
·about it ... does it have cat back piping or just the muffler .... any performance gains with a K&N added ??.. how about sound ... 430 ish or ?<br> and lastly interior noise ?<br> Im loooking for an inexpensisve way to improve my 320 souns and possibly slight performance increase ... nothing crazy though<br> so far it btw .... magna and super sprint .