What exactly do the different VPC chips do?? I guess I will have to upgrade my chip when I get the bigger injectors and T78. But I dont get some of the stats on the chips. The one I want, I think, is the one that is for a 6spd, 720 injectors, and single turbo. I dont understand what difference a 6spd would make on the choice of chips, but I do have a 6spd?? And when I'm running TTC mode its just like a single turbo, so I dont see where that matters either. And I think I will be going with 850cc injectors, so will that be a problem? Or can I just leave my standard chip in and make adjustments with the fuel computers?? Sorry for sounding ignorant, but I'm just curious?? Thanks in advance! PEACE!