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      08-11-2010, 08:19 AM   #30
stefan
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Drives: E92M3
Join Date: Feb 2008
Location: Calgary

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Garage List
1999 VF BMW M3  [5.00]
2001 BMW M5  [0.00]
2008 135i  [5.00]
2003 M3  [3.10]
2011.75 BMW M3  [4.17]
2009 STi  [3.83]
This sounds exactly like you'd expect it to--like there's a hole in the exhaust system. Although this is normally caused by rust or a muffler falling off.. not a modification.
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///M Power - 2011.75 LMB M3 6MT (fuelly)