[crzyCollegeKid]

i'm gonna talk as a honda guy cuz thats what i drive. i get my best times when i rev into the red line and shift right before i hit the limiter. but why? cuz even tho i'm not making much more power in the redline, when i shift, the engine still lands in the vtec powerband and doesn't bog down. you can't go by factory specs and numbers, unless you sit on a dyno in your own car, and then do some trial and error on the track. i know your question was about an auto tranny, but hopefully this will give you some insight. you have to try land as close as possible to your peak torque and horsepower when you shift, even if it means slightly overreving