does anyone on here recommend true duals on 07 nbs with the 4.8 in it? if not then what is a good flowing cat-back that doesn't have excessive interior drone at cruising.
does anyone on here recommend true duals on 07 nbs with the 4.8 in it? if not then what is a good flowing cat-back that doesn't have excessive interior drone at cruising.
the only reason for true duels on a 4.8 is the nice sound IMO. there are tons of free flowing catbacks on the market...magnaflow, corsa, dynomax, aerochamber, the list goes on and on.
old mod list: H/C/I/N/E/G 408
new mod list: 5.3, gears/posi, mufler and tune : (
One single 3" pipe will do just fine on the 4.8. Exhaust velocity is important, it helps to scavenge the spent gases out of the cylinders.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
i was wanting the true duals for the sound but at the same time i knew i needed the back press. and velocity that a single 3" will provide. i think i will just fab up my own with a Hooker muffler and single 3" inlet with dual 2 1/2" outlets. plus i will add headers later on after the first oil change.
Single pipe is fine.
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