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There is some bad news on the flash tune front right now. BMW has locked the OBD2 on most of the DME software versions on the M50i. We have a number of good flash tuning options but all of them require the DME to be bench flashed. That means you drive there or you take the DME out of your car and send it to them. Note, the car is not drive-able while the DME is sent.
This is a monster negative for flash tunes right now. Most of the tuners I spoke with said they believe the software creators that they use to upload / download the tunes will figure out how to do an “at home” flash that gets around the OBD2 lock, but it could take days or 6+ months. No one knows.
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