I will assume that they were/are as competent as me. W/ short gears (6 speed) maybe the Spec V is not the best choice for boost, but the PTI turbo spools crazy fast... so I dunno. I do know that most of the guys w/ the kit were laying down from 240 - 265 wheel depending on other supporting mods and tuning... and that was at Denver altitude even. I am sure if we went all out that the boosted Spec Vs would walk me up top (qr25 claim to fame is torque, not revs). But mine is limited to 7500 and stock is 6700). The PTI guys' piggy back still doesn't mod the factory rev limit of 6700 so you may be on to something... actually my wins may be based on what VTECKID said as far as not having to shift as soon/often as those guys. I have done pulls at almost every RPM and pulled those boosted Specs, but of course we cut the fun just like every1 else does once you prove your point.