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      04-05-2008, 03:33 AM   #6
Sam12345
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Drives: jet black 335i coupe
Join Date: Feb 2008
Location: So Cal

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2008 335i Coupe  [0.00]
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very interested.....I will go ahead and ask this...which downpipes are better for power/speed? These or Riss Racing? What does the heat-wrapped do?