i think i have one
Installed an M box TCU from an allroad, it shifts good under light load conditions - doesn't like full throttle. I'm thinking it's the difference in gear ratios. No limp mode, fault codes or any other symptoms.
It would be best to get the proper TCU installed so it doesn't tear itself apart, please let me know, ASAP. I called 6 local yards today with no luck. TIA!