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02-23-2011, 09:11 AM
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#20
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Drives: 04 M3
Join Date: Jan 2008
Location: Denver, CO
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Quote:
Originally Posted by **********s.com
Catless downpipes are always going to yield better performance gains. We are actually running a group buy on the AR Design N55 4" downpipes right now for those of you who are interested in picking up a set!!
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