Header collector size??
10-07-2010, 07:36 PM
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Header collector size??
Does anyone know what is measured to determine if a header collector is considered 2.25" or 2.5"? I just picked up a Greddy 4-2-1 one piece header for my GSR motor in my civic but not sure what size of collector it is.
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520lbGIANT
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02-20-2007 03:25 AM
