[piecesparts]

I purchased a set of KOOKS and their high flow cat intermediate pipe. We had to deal with an O2 sensor issue with the cats, but that is solved now and the truck runs great. The exhaust system no longer has the resonator after the cats and I finished it off with a Magnaflow muffler that had a 3" inlet and dual 2 1/2" outlets. The exhaust is now run to the rear bumper with Megs oval tips tucked close for clearance. There is no resonance in the cab and when under heavy acceleration the sound is amazing.