[portimaobluex1]

Hello I'm just coming on here to ask if anyone has done a tune on their new M35i or any other mods related to power. I just picked mine up and I'm just trying to get a sense of the aftermarket because there seems to be close to nothing out there for it. Thanks

[Gaffer_H]

I don’t have the M35i however currently the general consensus is that the ECU / electronics are that locked down by BMW there’s very little that can be done.

I’ve read that even Bimmercode don’t really want anything to do with the U11 because of the encryption on the electrical system.

[FlashMonkey929]

Originally Posted by portimaobluex1

Hello I'm just coming on here to ask if anyone has done a tune on their new M35i or any other mods related to power. I just picked mine up and I'm just trying to get a sense of the aftermarket because there seems to be close to nothing out there for it. Thanks

Unfortunately not much aftermarket support for this model. There may be some parts that *might* fit that are shared with other models, but no guarantees. As far as tuning goes, the only options right now seem to be piggyback tunes.

HOWEVER, according to one of the master technicians at the dealership here the X1/X2 is so connected, that BMW can see anytime you bring in the car and have the dealer hook it up for diagnostics, whether your car has done anything it wasn't supposed to do (exceed redline, boost target higher than stock, etc.). There's a "black box" that records everything, and even disconnecting the battery won't reset it. So, if you're under warranty, good luck if something breaks.