I have a 2004 ecsb 5.3 Silverado with exhaust and cai and we also have a 4door 2010 Nissan Frontier. My gf wasa driving it and we raced from 50-100 and I can take it pretty easily. But when we go from a dig, if I spin ever so slightly it jumps about half a truck ahead and it stays that way to about 80 where my truck falls on its face. Does anyone know what they run in the 1/4? Its got a 4.0v6 rated at 260/260 and weighs around 4400-4500 I believe. I think my truck really needs a tune and itll be no problem.