I have almost the same combo. in the GN, weighs about 3850 with me in it, and has a PTE51, vig. 0 pump 9.5", 24lbs. boost, 23/21 timing turbo tweak chip and a mease stretch stock intercooler and downpipe, crossflow 3" exh.
130K miles on it.
Runs 114mph in the quarter with it locked up around 90mph point.
Runs 111 or so unlocked, when I forget to throw the switch.
Pump gas and alky. non-progressive, but with a second staged nozzle off the simple EFI pump in bottle setup. Turn on at 9psi. and second nozzle at 18psi.
I'd figure around 10% slippage unlocked.
Lock it up at the mph that's around 5K rpm on your logger.
See what you get for mph then.
I guess once you hit 115-118 it's time for heads.
I'd verify the boost gauge as well, you could be a pound or two low on the reading, or else the 11.0 fuel ratio is killing you.
I guess rich is safe but lean is mean.
There should be something left there with your car.