Thread: loudest muffler?
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Old 02-07-2011, 08:50 PM   #14
Bad70supreme


 
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Drives: 2010 aqua blue SS/RS M6
Join Date: Feb 2010
Location: plainfield, IL
Posts: 2,706
Flowmaster 1 chamber race mufflers, thats what I am putting on my car in a few weeks
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10.91 at 122 H/C stock block N/A
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