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Old 05-02-2006 | 06:47 PM
  #47  
box car
 
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Default RE: Max Carb Size On Stock Ryobi?
Flyjoe, could it be because of the formula to determine the tuned length of the exhaust.
L=EDx42545 divided by RPM. Assuming a exhaust duration of 196 and 11000 RPM we would have 196x 42545 divided by 11000 = 758 mm, 758mm being the tuned length of your exhaust. A true tuned exhaust would cost more than the engine.
Ken
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