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      07-09-2012, 09:27 PM   #6
4 Star General -Twilight Zone
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Drives: '11 E92 M3 ZCP
Join Date: Jan 2011
Location: 5280

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Were those two videos in your first post done with just the AA exhaust? Or was there a X-pipe mod?
If it was the OEM X-pipe, how much louder would it be with a Challenge street X-pipe?

PM me pricing to 80112
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