depends on what kind of car you have.. lol. i don't have any experince with any thing else but all wheel drive. i can lauch it two diffrent ways, i can keep taping the throttle around 4-5k and slip it.. or just hold the rpms at 5k and slip it.. both ways work fine, if you know how to do it, they both turn out the same.. and i think my best 60ft(1.7) speaks for itself.. but keep trying diffrent ways, you'll figure it out sooner or later.. good luck!