Quote:
Originally Posted by BarnBade
Just picked up a 2020 530i Msport and was curious if the bootmod 3 tune can be turned off and on if I had to take it in for service or is it just never a good idea to tune under warranty? Not sure if the dealer can tell if there was ever a tune installed whether its on or not.
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If you've tuned with bm3 once it will be traceable even after you reverse it to stock. That does not neccessarily mean that the whole warranty is voided, but unless you can prove that any potential problems with the engine in the future is unrelated to the tune, then I would suggest you to stay away from tuning altogheter.