I agree - I would remove the BMS DP Fix in the event of some kind of catastrophic failure before going to the dealer. I do all my own work and maint so I wont be going back to the dealer anytime soon. I believe the key in the warranty arena is if you have ever reflashed the ECU and upped the boost/timing beyond the BMW factory limits. That would definitely be a red flag. If/when I decide to run a tune, I will plan on having to cover any catastrophic failures myself.
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