LS1TECH - View Single Post - How much HP will a 4" mufflex with Flowmaster muffler support?

LS1crazy01 · 07-01-2009, 09:53 AM

Just go duals, even a 2 1/2" setup will flow better then a 4" Y pipe set up.

07-01-2009, 09:53 AM	#9
LS1crazy01 12 Second Club Trader Rating: 12 Join Date: Sep 2005 Location: Spring Grove,IL Posts: 1,146	Just go duals, even a 2 1/2" setup will flow better then a 4" Y pipe set up. __________________ Bolt ons,Midwest Chassis Fab 9" and Speed inc. tune.