Went for a scary ride. 2 4th gear pulls.
#1 pull it was way to lean and boost was creeping badly. 3000 rpms and we were at full boost 5 psi. boost then crept up to 9+ psi near redline and the car leaned out to 15:1 a/f. EGT's got up to 1725. Not good. Glad I had a datalog of that. Cranked up the rising rate regulator.
#2 pull 3000rpms = 5psi. Creeps to 6ish psi and then above 4800 rpms it creeps up to 8-9psi. My guess is the engine really is moving air at those rpms and the tial 38mm is not able to handle it. Only leaned out to 13:1 but that was a blip it was more like 12.7:1. Added a little bit more fuel.
This is with the custom intake manifold fixed and cams advanced 4 degrees.