You can delay the upshifts by starting at a lower gear. The auto tranny is supposed to "know" that you are dragging if you floor the pedal, but sometimes it might shift up before (or after) you want it to. So you put your car to say, 2, and drag till almost red, then shift up to 3, then rinse and repeat to D. It is not "bad" for your tranny, just bad for your gas mileage!
Heck, get a manual if you are into drag!
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