somebody will correct me if im wrong but they havent in the other post as i see it.....the amal valve is set up for a standard cossie,it is a safety precaution ....in normal mode,it operates your actuator and it bleeds to airbox so will not open your actuator easily....if your ecu detects a problem,it operates amal valve and diverts pressure to actuator ,therefore opening it and reducing boost............when a cossie is modified you could adjust the actuator preload to any degree ,but if you shorten rod to much i dont think it would be accurate as it would be out of actuators operating parameters....as explained in other post you set up actuator to make sure it will not open by turbo pressure alone and then set by restricting or opening amal outlet hole......the hole is normally to big so will open actuator too early..decrease size of hole and it will hold the boost longer.....calling..stu to explain it better