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      04-22-2007, 09:34 AM   #23
E36325is
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Second Lieutenant
 
Drives: 1M coupe
Join Date: Dec 2006
Location: Hong Kong

Posts: 220
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I seriously doubt any header upgrade would yield a HP gain of more than 10hp. Unless there is a turbocharger inside the header!
E36325is is offline   Hong Kong
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