I own a 00 e39 M5. I've reluctantly tried the adaptive reset via battery dis/ignition method but never really felt a difference. Today while detailing I started checking fuses and ended up removing ECU. After plugging it back in a took the car out not really expecting anything and was blown away how different the car drove and felt. I'm guessing that was the adaptive reset I was looking for or was it something else? I mean huge difference especially on the response.
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