Thanks Alan, appreciate the reply and time taken I have already read that page and quite confident with the turbo being free and the actuator working's.
I'm suspecting the actuator potentiometer spiking when in fault state but would like to log the information using vag com but as usual need to update my lead and go on extended run
The Bosch Esi has the data of 0.7-0.9v & 4.0-4.2v is this critical? tend not to trust the info 100%