Quote:
Originally Posted by m0butt
Going to be taking my '19 M2C which is Stage 1 tuned with BM3 in for it's first oil change after break in service. Do I have to re-flash it to stock? Will they update it or even care that it's tuned?
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If I were you, I'd flash back to stock and relock. Then I would reset all the error codes. The Carly app can do it. I guess the BMW diagnostic app should do it too. This way you go in with a clean slate.