Originally Posted by
Bill@HPTuners
might want to consider upgrading to the MPVI pro hardware, I can't imagine having a laptop in the vehicle running 5.6's in the 1/8th being the best way to datalog, could easily be a usb or some other connection issue, cars going that fast to to not be so smooth(I've driven in some fast cars at the track and its usually a pretty violent experience), I can't imagine a pc holding up so well. Really just so many variables you'll be hardpressed to narrow it down to one but taking the laptop out of the picture would be a start in the right direction.