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these scooters with GY6's are set 'rich' from the factory - haven't yet checked exhaust gas #s, because of time constraints
adjustable main jet needle style setup correctly will achieve 100mpg gps verified. IF your #s above are using the speedometer/odometer they are typically 20% optimistic. so you are easily 35% off now
higher consumption = running rich
IF you are going to replace the carb, and you don't believe it is running rich-- then why replace it?
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