GM 4.8L & 5.3L 1999-2007 1/2 Truck Cat Back Exhaust Kits
Make your GM 4.8L or 5.3L sound and perform the way it should by increasing the exhaust flow and enhancing overall power. More power means you don't have to mash the go pedal as hard and as a benefit we have seen a 2-4 mile per gallon increase on the highway.
Turbo mufflers are going to have a real mellow sound, with about the same noise level as stock but a lower tone. Street flows are going to be more aggressive sounding with more growl at the tailgate and a bit more sound in the cab and guaranteed no droning.