Originally Posted by Ca$hOnly
Ouch. Sorry to hear that. I do think that if push came to shove they will have a very tough time proving your tune did anything to the engine/drivetrain.
The other way around.
You would have an extremely hard time fighting BMW. Good luck going one on one with BMW, if they void your warranty. Whether you think you are right or not, you can't fight a giant company like that. Class action lawsuits are only thing that get BMW's attention. Not some random guy with a M3, that put a tune in his car.