Don't worry about the rolle eyes. I'm just tired and couldn't be bothered doing a technical topic but did anyway!!

Mr Chav, the ESC 2 module only takes control of the AMAL at engine speeds over 2.5k rpm. Once it's in control, it pulses the voltage to the AMAL valve, altering the frequency depending on circumstances. At high RPM, the frequency decreases to allow more pressure to the actuator instead of bleeding off most of the air. At approximately 6.1k rpm on an S1, the ESC 2 module allows the turbo to produce max boost pressure as the demand the engine makes for air is getting close to the turbos limit.