Ok here goes,
Long trip to Canton and 1/2 there the car stuttered and then no boost. No CEL
Tried resetting ECU = No fix
Reset battery = No fix
Load GM stock ECU relearn = No fix
By pass waste gate = No fix
Turbine spooling. RPMS are normal. Vacuum seems to be normal.
Check all pipes and all seem to be in order. Further inspection schedule. Bumper coming off and such.
Samething happened to me yesterday. car is good as new now. Go to an autoshop eg. pepboys and pick up Mass airflow sensor cleaner. clean the sensor connected to your air intake, and also clean your air filter then pull the battery. it worked for me so hopefully you receive the same luck!
2007 Mysterious GXPDejon CAI, GM stage II Tune, Bilstein shock absorbers, 20% Tinted tail lights/reverse lights/windows, Turbo tinted middle brake light, Custom Black Body paint with matching A pillars and back deck (no silver), Smoked wind restricter, Eibach Sportlines 2.4 inch drop, Goodyear Eagle GTs, SOLO Street Race exhaust