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      08-11-2010, 09:19 AM   #30
stefan
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Drives: E92M3
Join Date: Feb 2008
Location: Calgary

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Garage List
2011 BMW M3  [4.17]
2008 BMW 135i  [5.00]
1999 BMW M3 VF  [5.00]
2003 BMW M3  [3.10]
2016 BMW X1  [0.00]
2001 BMW M5  [0.00]
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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