Originally Posted by motorheaddown

I couldn't be happier with the exhaust. It's actually very quiet yet performs very well. Plus, dual 3" exhausts are larger than a single 4" pipe. Consequently, the piping just gets bigger as the exhaust flows out the back.

FWIW, opening the exhaust was the single biggest improvement in performance especially when I installed the T74. The motor gained almost 4 psi of base boost pressure when on the wastegate spring, and it made nearly 150 more hp from it's original custom exhaust because the turbo spooled 5 psi more at high boost (was 28 psi; now 33 psi). Basically, a restrictive exhaust will keep a turbo boost-limited because there is no pressure differential across the hot side of the turbo.

I will never again underestimate the need to get exhaust gases efficiently past the turbine. ;-)

-scott

Originally Posted by talltrini1

I really like the looks of your exhaust setup, and those mufflers look to be reasonably priced as well. What tips are those, though? They look almost stock; the Vibrant mufflers appear to not come with tips?