When your dragging, I'd rev it to like.... say 4k and drop it, then shift at 6550, which is where you start to lose power. Taking it all the way to redline may SEEM faster, but in reality, if you shift BEFORE redline where tq starts to drop off, you'll stay in the powerband better and accelerate faster.
Of course, this is coming from my brother who has an SVT, but for me in the SPI, it's foot down till it starts bouncing!!! haha, I kid, I kid. But really, my powerband is like..... 4300 to 5700... hahaha, and it's so annoying too, because when it starts going, IT'S STILL NOT FAST ENOUGH!!!!!