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      07-30-2018, 05:41 AM   #18
Dinan-M
Dinan-M
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Drives: 2018 M5
Join Date: May 2012
Location: Arlington, VA

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Quote:
Originally Posted by Demon Barber View Post
In my experience, the valves never opened at cold startup, and never opened in lower rpm range. I'm very happy I unplugged, and would be glad to do a DIY if there are still people interested. Again, if you detect any drone, completely reversible.
Post a DIY,and sound clip before and after. I’m very interested.
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