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Old 12-08-2003, 11:16 PM
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adryan16 adryan16 is offline
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I just read a book that outlined the advantages of stepped headers, or even stepped exhaust systems. They gave percentages for length that each step should be of your total header length should be. Lengthening certain steps affects different RPM ranges, enabling tuning. I wish I remembered more, but the book was just loaned to me for a while. If I get it, I'll try to retain a bit more of that. My bad
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