I had an issue where my car shut off completely and stopped working on map5 e85. I took of the jb4 and my car wouldn't go into boost at all. I took it to the dealer and the DME needed to be replaced. They screwed me with $2k for a new DME and installation. Dealer could not diagnose the issue so a BMW field service rep was called out and he flagged the repairs since the system was tampered with. I went into the dealer with no modifications.
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