I would suggest asking either Clownhair, or one of the other guys with some hands-on exp with this. I keep giving people the wrong info on this it seems... try this thread, ask there...
2.8" pulley runs, got some video
Clownhair has been through a few pullies and did some testing and logging, hasn't made it to the dyno yet, he will be this week I THINK, anyway they got more info than me...
I know that the computer/engine management will come into play near redline to some degree. I think I remember them saying that it will bleed some off at redline. Are you making full boost sooner though?