That turbo should make boost under full throttle. Where do you have your boost gauge hooked up to? is it after the throttle body? If you removed the charge pipe and reved the engine up the turbo would blow air out you stated, but the thing is that when the pipe is hooked up to the throttle body, the engine will also be pulling in air, and in some cases be canceling out the air that you feel without the pipe on there. If the exhaust side is too big and the compressor side too small the engines demand for air will override any boost that is being made. have you tried blocking off the wastegate and see what happens? or checking for leaks arround the air hat etc. my turbo v6 was always blowing the gasket out from under the air hat. even then it still made boost, just farther down in the petal position. also do you have a checkvalve in the map sensor? because if that sees boost it could cause all kinds of other problems with tuning. very nice install though. major props.