[Richard L]

If you are willing, I am very happy to have a go making this happen. But it will require some work on your part, measuring voltage from the electronic wastegate control valve. I believe there are five wires (pin number as below):

1. Motor (+) ...... [3B/46] DME connector/pin #.
2. Power supply(+) ......[3B/32]
3. Power supply ground ........ [3B/34]
4. Wastegate rod position ........[3B/33]
5. Motor (-) ............[3B/47]

I think the DME controls the direction of the motor on pin 1 and 5. Receive in real time the wastegate rob position on pin 4.

But manipulating the voltage at pin 4, you can drop the boost without using PID control loop. We are not trying to control boost here.

The first step is to measure the voltage on all the pins at idle of just ignition on. With those information, I can start my work.