when to go with a 3.5" exhaust
David Buschur tested a 3.5" exhaust, IIRC made well over 600whp on his dyno, and gained NOTHING. You don't read about them because they aren't needed...
IMO, you'd have to be making 800+ whp to need 3.5"...
IMO, you'd have to be making 800+ whp to need 3.5"...



