If your internal WG is stuck open, then you have to remove it to fix it. To test to see if it is stuck open, then all you have to do is disconnect the diaphragm actuator hose. Drive the car and see if you boost. DO NOT DRIVE IT HARD. Just monitor the gauge. Theoritically, with that hose disconnected, you will hit max boost since the WG will be closed the whole time. Try that and see.....
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