Bimmerfest - BMW Forums - View Single Post - removing resonator only??
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Old 06-02-2011, 08:45 AM
funktekk funktekk is offline
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Location: South Carolina
Join Date: Apr 2011
Posts: 70
Mein Auto: E63 & E46
Originally Posted by JPEG23 View Post
Drone is exhaust humming and typically seen at around 2k-2500 rpm...before you get them taken off have someone else drive your car by a few times and record it, and also record you revving it, please

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the 2k humming is exactly what I got.

I don't know if I'll be able to get the drive by's but I'll definitely get some rev'ing.
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