On the thread you linked to it mentioned needing to code the new part and losing remaps etc. I haven't read the full thread but I specifically told BMW not to flash and code as the car is remapped. They called to confirm and didn't say they had to code it so I'm hoping not. As I'll have been in a slow Insignia for X weeks before getting the car back I'm not sure I'd know if the remap was there or not, as it's going to feel like a rocket ship regardless. Not sure how I could check if they flashed it and lost the remap either.
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