Quote:
Originally Posted by FloridaM5
After I flash an ecu with an aftermarket file I don't take it back to the dealer for oil changes and service and such. With the jb4, I'll just take it off and roll the dice.
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I understand that any use of a tune or piggyback that pushes the engine beyond the factory settings will get flagged once the car is plugged in to the BMW diagnostic computers, even if you remove said tune or piggyback. So engine and drivetrain warranty pretty much void.