GM Repair Problems? Ask GM Repair Expert Now.
Yes, very possible. Is the air filter plugged? Dirty Mass Air Flow sensor (MAF) sensor in the duct? Plugged exhaust? charge air cooler line popped off?
Its modified to add a second turbo? Factory it only came with one.
OK, so lets check that Mass Air Flow sensor (MAF) sensor then. I am not sure where it would be in your setup, does this share a single air filter?
Dirt on the sensor, even consider unplugging the sensor and see what that does.