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      04-05-2008, 12:03 PM   #8
radgator1
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Drives: e90 335i
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2007 e90 335i  [0.00]
2007 e90 335i  [0.00]
Quote:
Originally Posted by Diesel335i View Post
heat wrapped actually help keep it cooler ... and i believe he was selling because he got a set of riss racing....
heat rap prevents heat loss actually which increase flow velocity. And not that it matters, but I don't think he is doing downpipes at all. RR vs UP both offer approximately the same perfomance increase. RR are prettier though
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