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      03-25-2018, 09:58 AM   #424
MagnusT
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Drives: BMW M2
Join Date: Jun 2016
Location: Stockholm

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With ASD delete, can you hear the difference between open and closed exhaust flap?

I finally tested ASD delete and yup, a nice improvement for sure!

But with ASD off I was switching between comfort and sport mode and... I really didn't hear any clear difference in sound with the exhaust flap open or closed. It was more of a "maybe I hear a difference".

I tried with full power at low revs, high revs, cruise and so on. But no, no clear definite difference.

What is the driving situation when you think it's most obvious if it's open or closed when you drive without ASD?
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