Variable Valve Timing - to keep or not???

[gkring]

Keep the VVT. The MAST computer is easier to tune as it has wideband capability and is a standalone system anyone familiar with an Accel DFI, Big Stuff, Fel-Pro, Haltech, etc will be able to tune, not just guys with HP tuners. The Mast computer will also have a dyno tune matched exactly to their cam so there will be no reason to mess with the tune until you start changing things. The benefit of the GM computer is control of a 4L60E, 4L80E automatic, but it will most definitely need to be tuned.