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Old 04-18-2012, 06:40 AM   #12328
Joined: Dec 2010
Oddometer: 39
Originally Posted by helotaxi View Post
That will increase the exhaust flow but not necessarily increase the volumetric efficiency of the engine beyond what the engine could otherwise pump.
Some of the best tuners have been able achieve volumetric efficiencies greater that 1 in a race bike, its not not easy to achieve and those motors wouldn't last very long in a street bike.
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