accellerating wiothout throttle

  1. herbilious

    Bike accelerating without using throttle

    Hi, I've got a relatively new (3rd tank of break-in) 66c motor that has a weird issue. I just installed a new expansion chamber banana exhaust because I broke the stock one, and something I've noticed is that once I start the motor and let out the clutch, the bike accelerates relatively fast...
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