Of a program called cartest I'm sure many of you have it, if your good at estiamting crank numbers it'll help you determine an effective launch rpm and even give you optimum shift points and give u estimated 0-60 and 1/4 and 60ft. times. I love it o and I launch at 3500 Slipping from contact minimal wheels spin and not that much bogging. (a stock tt is recomended at 3100 dump) my cars running shitty so I launch higher.