Hi, any news on this one?
I'm planning to put that gearbox in my M135i aswell. Except that mine is from the F87 M2.
Two problems came into my mind (unfortunately after i have bought the M2 gearbox):
1) the neutral switch on the M135i gearbox only detects neutral for start/stop automatic, while on the M2 gearbox it detects neutral and the gears (at least reverse gear) which brings me to
2) the reverse gear switch on the M135i is located on the rear left of the gearbox, where the M2 box doesn't have a switch but only the same casted piece on it. The question is: is the mechanism that activates the reverse gear switch still inside the M2 gearbox, so that a drilled hole will do the trick?
3) related to 1): the holes for fixing the neutral switch (M135) or two channel switch (M2) are completely different, which means, that you can't simply put the M135i sensor on the M2 gearbox. But will the M2 Sensor work with the M135i? (the connector housings of those sensors are also different)
Must have a reason, why nobody has done that swap by now?
Regards,
Ben