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Originally Posted by Bimmer Pleaser
Not sure about CS but there are tuned M2C.
Not saying you are wrong but then what stops people from going nuts and forcing out hundreds of HP more that an engine is designed to output? Can I tune a M340 to a M3 power level and hold BMW responsible on its warranty claim?
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The law says the dealer has to prove that a modification caused the failure. Obviously, at some point, if there’s too many modifications BMW isn’t going to be responsible. Small things like a tune, exhaust, and intake aren’t going to add so much horsepower to cause a problem.