cat question

sd88supra · 12-14-2006, 08:24 AM

the exhaust will always be more free flowing without a cat but it helps if you have the right size pipe diameter.

12-14-2006, 08:24 AM	#2
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	the exhaust will always be more free flowing without a cat but it helps if you have the right size pipe diameter.