when drag racing, and you happen to miss a gear 2nd 3rd or even 5th, your not in a GEAR, SO what happens is things happen so fast cuz the motor is in FREE REV and the stock ECU can not detact anything because generally when you power shift your rpm's are really high and you put your motor in free rev so your rpm's will go up to 9500 if you dont let off real fast. Key word is FREE REV, sorry for mis spelling its 4am and i just go home from work.