Limp Stillen Supercharger dtc p1239

wymoteeZ

My Z will go Limp, taking all Throttle response from me.
No pattern. Have to coast off the road to restart.
Mostly takes One restart attempt.
Can take 10-20 restart tries before it will take throttle from idle.
I've done all the re-Learns, no wire pinches, or rubbing.
I replaced the Throttle Body (Bank2) originally,left-side,drivers-side
but I'm still Limp (no viagra jokes)

I am wondering ...
Does the fact that I can't easily get it out of Limp Mode point to anything?

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GTM STAGE II TT, EXTERNAL WASTEGATES, FI 3" TDX, BLITZ EBC, SZ HIGH 5, FI 500E FUEL RETURN, WALBRO 525, ID1050, ZEIT FLEXFUEL E85, SD TUNED with ECUTEK by SEB, SZ HIGH 5 CLUTCH, 2014 NISMO GUNMETAL WHEELS, 2015 NISMO FRONT, REAR, & SIDE SKIRTS