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Old 02-20-2013, 05:53 PM
S.C. Express S.C. Express is offline
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Join Date: Jul 2012
Location: North Augusta S.C.
Age: 40
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Vehicle: 2012 Ram Express
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Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
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dual 3" pipes would kill your power. A single 3" pipe would be fine. You don't need a full 3" dual exhaust unless you are running a 500+hp big block or running boost. It's dyno proven that high boost aps need larger diameter exhaust. I've seen 4 cylinders with turbos running 3 1/2 to 4 inch piping making around 400 hp and tq to the wheels.
As for the resonators, they are not restrictive. You will see no gains from removing them. They just help minimize drone, thats it.
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