by a two port bleed vavle and replace the amal valve with that. you connect the hose cummin from the turbo compresor housing to one end of the bleed vavle then connect the pipe cummin from the actuator to the other end. you then blank the third pipe of (it goes to the metering head, lots of people think the car drives better with the metering head hose blocked.) amal valves are well dodgy and are the cause of most bost probs. hope this helps mate