1. That is a possibility for the boost to fall off but not a likely one for the power level to completely plateau.

Sure it does, my dyno graphs used to plateau all the time. Full boost reached early and plateaus then falls off. Power has to plateau at some point.

A/F Is "roughly" around 12 to 1. If could use some work up top as it drops to almost ~11 to 1 above 5500rpm

12 to 1 is still kinda risky in my book for pump gas but its cool, 11 to 1 up top, power can definately be made there. I shoot for a mid to high 11 when tuning, i try to stay away from the 12's in boost.

I am sure a lot more could be rung out with race fuel of 100, 110, 120 octane...

Thats exactly my point, I am sure alot more power can be made as well. The point i was making was upon the remark of the 57trim compressor being maxed out... So i was trying to give him options to surpass that "max hp" figure. Just trying to help, would hate for someone to upgrade to a trim level that realy doesn't suit the power goal if they don't have to