Hi everyone, finally got my fresh 7M GTE running and at first all seemed well. Cranked with fuel disabled to build oil pressure, then fired right up. 1st test drive seemed good until I decided to do some WOT runs from 30MPH in 3rd gear up to about 60 or 65 MPH. First few runs were good, but 4th or so had a sharp stumble at mid rpm then climbed normally. Further testing shows issue getting worse, and runs poorly as soon as I get to 5 pounds of boost at any rpm in any gears. During 1st several runs I noticed boost would build to 10 lbs rather easily. Car has driftmotion 3" exhaust and downpipe, stock turbo and wastegate, greedy BOV, aftermarket intercooler and pipes. Car sat for 2 years during build, but I think I had added sta-bil to fuel and it smelled OK. Would bad gas trashing injectors or fuel filter act like this? Don't think it is ignition, but perhaps stock AFM is causing issues. Did not have this problem before build (done for spun rod bearing). Any help most welcome.