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11-22-2011, 06:50 PM
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#27 |
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Veteran Member
Join Date: May 2006
Location: Murfreesboro TN
Posts: 5,116
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Re: header tube size
Step headers offer a small gain, mostly what they do is increase average HP and torque. It is critical that the length of the primary and collector tubes is correct. You can actually get away with as large or larger an error in diameter than you can in length. A two step header (3 diameters) is worth just a few percent in peak power, but can be worth more in average power.
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Alan Roehrich 212A G/S |
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