In search of the quietest 1M exhaust...
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12-07-2012, 06:45 AM
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany
Originally Posted by
+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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