Huntr1117

iTrader: (18)

It is my daily driver, for now. Next year I'm buying a new Silverado, then she'll be in the garage.

Geneticallybroke

iTrader: (3)

I think your going to get a little bit worse gas mileage because the exhaust velocity leaving the engine will be better with stock exhaust at lower rpms. The long tube headers will be better at scavenging at higher rpms but suck at lower rpms and it will move the torque curve higher.