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For your info. Right from a friend of a friend who is a A dealer tech.... When your car goes in for service they plug YOUR car into their diagostic machine in the back right away. THEY CAN SEE A TUNE IN YOUR CAR. Tech is told to stop working on car and service advisor is INFORMED. They WILL AND CAN VOID YOUR WARRANTY FOR ANY AND ALL POWERTRAIN ISSUES. And if it is a lease and the car has no warranty they BMWFS will not accept the car as return and will sue you for damages or it will be cheaper for you to just buy the car. They only want to see DINAN TUNES in these cars, regarless of how much power that tune makes it will keep your WARRANTY. You my friend are very misinformed. If you dont believe me, go back to the dealer and ask yourself.
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