I hate sound like an *** but Dual sucks. They just plain suck. Dont be surprised if noise starts getting into your system via the shitty *** RCA plugs on the back of that H/U. I would dump it now if you can. Just my .02
2001 NBM Z28 M6-Thunder Racing 224 cam, Kooks headers and Ypipe, Magnaflow exhaust, Double roller, SLP CAI and lid, ASP underdrive, BMR sfcs, and SPEC Stage3+ clutch and billet flywheel.