I don't know why people question reving it higher b/c they don't make more power.

Even if it flatlines, or @ the "worst" drops a little, who cares. You are effectivly extending your powerband.

Most turbo setups make peak power later in the rpm band, so if you are a 6k-10k car, and make peak power @ let's hypothetically say 9k, and your power drops 25-75whp by 10k, you are still making more power than you would @ 6k, lol. With that said, I'd want to keep that power moving ahead, not shift and let it build back up again.

If you can rev it out an extra 1000 rpm and get through the traps in 4th gear, that will pick up a fair amount of time from shifting to 5th and getting back up on the pipe.

Seems like common sense to me...unless I'm missing a bigger picture here.