Um from what I heard, all the venom 400 does it trick the car into thinking you have the gas pedal pressed down more than it really is. It does nothing at wide open throttle (when you floor it), and all the dynos show no improvements at WOT. I had a debate with a vendor about it, and he just kept saying, its designed to be safe so it does not work at WOT. It only makes everyday driving easier since you don't have to push the gas pedal down as hard. Hmm anyone else have any opinions on this?