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Old 10-10-2013, 05:18 PM
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MotorBicycleRacing MotorBicycleRacing is offline
Motorized Bicycle Elite Member
Join Date: Jul 2010
Location: SoCal, Orange County.
Posts: 5,356

It used to start. What happened?
Originally Posted by Jim860 View Post
im running a stock exhaust on my 66cc bike engine and looking for more power like any one and i heard that removing the cap with add power. ia this bad for the engine and does it actually add any power. also any cheap mods that you know of that will add power.
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