Quote:
Originally Posted by SuperCNJ
^^^ Does anyone know?
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1. If BMWNA wants to know, they will know.
2. I have never heard of someone having warranty issues arise due to a prior DME flash, assuming it was uninstalled.
If your car is otherwise stock, BMW has no particular reason to suspect anything. They will do their standard scan of existing and shadow faults, though most will be cleared. To truly wipe your shadow faults you would need a BT cable/INPA DCAN. But again, if they have no reason to dig, they aren’t going to do so. So if you are tune only, your chances of having issues are extremely small.
With all that said, people who mod their cars for power while hoping to incur close to $0 in wear costs are walking a thin line. You don’t up the output of a motor by a significant % without accelerating the rate of failure for peripheral parts.
Sparknotes: There is no free lunch.