Sorry! Fuel Cut/Stall problems?

[DSMdriver89]

I found similar threads in search, but not as specific as I was hoping.

'90 TSI AWD

Engine Mods:
Big 16g
Injectors unkown
Fuel Pump: 255 wally (maybe)
2" DP (i know.....)
2.5" catback
Unknown vented BOV
TurboXS Dual MBC
The rest is stock as far as I know.
Running 10psi
~215awhp


Under WOT/full boost it will sometimes cut out, but when I release throttle and go back in it's smooth.

It will also stall/die sometimes when I let out of boost, and idle is around 1200-1500RPM.

So far, I think it may be the MAF, or a small exhaust manifold leak, but no boost leaks. Possibly in need of BISS adjustment for idle.

This is very annoying. If you need more info, I can try and provide it.

TIA.

 

[garrek11]

try adjusting your BISS and Idle switch. and make sure your o2 wiring isnt hitting the manifold causing bad readings.