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Old 07-06-2008, 12:53 AM   #25 (permalink)
garys_1k
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Quote:
Originally Posted by Frank Lee View Post
no, not backpressure, improved low rpm scavenging from the small pipe
Ah! Yes, if the higher speed increased the gas' momentum enough, then it could reduce avereage pressure at the valve ports. Good catch, and it would make an interesting dyno test.
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