Yes, I intend to try to capture what is going on via logging, but for now I thought I would throw this out to see if anyone has any ideas.
My guess is that this is related to the TGV CELs I have, but I would like others to confirm that.
Preliminary Info:
EJ207 shortblock
WRX heads
16G
550cc pinks
Walbro
TB Exhaust with 1 cat
JDM v7 STI TMIC
V8 TGV-less intake manifold
Turbo inlet hose
Vishnu EcuTek reflash (asked them for a flash for my mods... who knows what they flashed...)
Now and then (details of circumstances unknown), I will got WOT, my boost gauge builds up as normal to 16psi or so, but the car feels to be running at about half power.
If I pull over, simply turn off the car, and turn it back on, the problem is gone and the car rips.