When it's not operational (like it's been unplugged), the amal directs air straight to the actuator to run reduce boost. When it is operational, the AMAL is opened on idle and up to 2500 rpm to try and encourage the turbo to spool up faster (any air is being diveted away from the actuator). Once above 2500 rpm, the amal is switched to reduce the pressure to the actuator in comparrison to the actual boost pressure.