Thread: European BMW PE
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      11-11-2012, 12:18 PM   #17
jsmonet
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Drives: 2012 135
Join Date: Nov 2011
Location: so cal

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Not sure if this was already answered, but the big rubber goober is a harmonic damper. It is supposed to soak up just enough of the extra vibe to keep the exhaust from droning.
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2012 135i. dinan stg3 | ohlins dfv | assorted rice | hardest parker evAr