bigokie

Anyone use 'em? I have a Hypertech for my 2002 Z71. I was wondering if there are any better ones out there.

blackmax

I am also looking for a performance package for the 2007 VortecMAx 6.0 Silverado. What exhaust system. Flowmaster, Magna-Flow, Roush. I want it to sound killer. I have used Flowmaster in the past. What is the best programmer to use to get rid of that speed limiter and to tweak that 370hp up a little. Are there bolt on superchargers for this model available yet? If anybody knows what mods are available. Any suggestions would be appreciated.

rhebert2756

Did you get any performance increases from using the Hypertech?