Is Mac solenoid hooked up right, this was my first question. The car doesn't seem to be expecting the boost either, makes me think tune is wrong also. Pretty sure there us a single turbo specific software needed.
I think it does expect something, Target and DME BT looks correct at WOT onset for the map he's on. iirc if the Mac was hooked up wrong it should result in overboost not underboost.
fp_h is tanking hard too, has the HPFP ever been replaced?