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      12-07-2012, 06:45 AM   #18
Dackelone's Avatar
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany

Posts: 16,202
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Originally Posted by sparoz View Post
N55 mids
+1. I thought some 1M owners found that the N55 mids seem to solve the drone. I thought thats because the N55 mids have a resonator at the end of the pipe - while the OE pipe does not.
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