just because mapping sounds like a good answer and tends to be the consensus doesn't mean it's right... mapping doesn't change over time... you don't have wear and tear on mapping... still feel smart?

and you still haven't ruled out the possibility that their maybe something wrong with your car or maybe it's just general wear and tear from you dumping on the gas all the time...

and i have yet to find a car that will go into first gear at that speed... if you know of one, tell him to change his trans...