It would be good to know wich gear box and gear box ECU firmware number you have in this car. Did you make any changes on the wire tree between ECU-Firmware (4F0910552S) and 3,2-BYU-ECU-Firmware (4F2910559A)? And why did you choose 3,2-BYU-ECU-Firmware (4F2910559A) for you? I think it would be easier to change the power class in the original ecu or the gear box software. Wich options do you have to programm the gear box ecu?