Did you have a Drivetrain malfunction before the tune? I thought I read something about that in one of the threads.
I have a F10 M5 with BMS tune and catless downpipes and had Drivetrain malfunction message at the top of 4th gear because of air/fuel mixtures. It takes few driving cycles and it goes away on its own.
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Current: 21 M5 Comp, 17 X5M, 06 M3, 14 Ferrari FF, Tesla Model S Performance.
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