| mine dont either..,......yet..hehe. I get better mileage than you...hehe My turbo screams too.
U know it would be nice if you didnt have to get a piece of pipe bent to delete the muffler on a stock exhaust.
__________________ 2004 GMC 2500HD D/A CC Carbon Metallic w/ LB7
4" turbo back MBRP exhaust, Cognito UCAs & HD tierods
TST Powermax Programmer, Diablosport Predator
285/75-16 BFG T/A KOs, Eagle Alloys Series 187
Clifford 2 way remote start, High Idle, Bilstein 5100s, 1.5" lift blocks
AFE Magnum Force Stage 2 Proguard 7 intake Waiting install:Rancho Steering stabilizer....all thanks to NorCal Truck Support your Supporting Vendors |