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Bump. I have done some research on this today and I am reading that a lot of F10 owners who have done muffler deletes and disconnected ASD have significantly reduced drone. This would imply that ASD is somehow taking noise from the exhaust and amplifying it. However, I also read that you can code your car to sound like a car that is completely different to what you are driving (i.e. an M6 comp instead of a 640), which would imply that the noise being pumped into your car is really being driven more by RPMs. Does anybody know how ASD is actually working?
I plan to disconnect ASD this evening with the hopes it drastically reduces drone. I am just curious to learn more how this system works.
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