Well since my cars been in the shop iv been playing alittle more with my truck. My buddy just bought a 08 6.7 Cummins with an h & s programmers set at the highest setting, 5" exhaust turbo back, and an intake. We took then out to the back roads and did 4 20 rolls. I'd jump ahead and keep pulling away, same results about 3-4 lengths. We did 2 runs from a dig and it was alittle closer off the line then I pulled away shutting down about 80 . I'm running the Livernois 91 race tune but not for these races. I returned the truck to stock to see the difference, so tomorrow I plan on running him with the tune set. I have the video but IRS in my brother's phone Il try to get it posted.