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Just finished the 47cc install of the generic Chinese kit. Oval, not too bad with some minor tweaks. Took some playing with the carb settings to get it right. Now, it's nothing but fun and waiting out the engine burn-in so I can open the throttle some more. ;) Question: Has anybody added an...

pocket bike exhaust pipe muffler | eBay and would i get improvements in performance? would it be quieter than the stock exhaust? a while ago, i was riding along and all of a sudden the exhaust sound increased ten fold, turns out the end of it (cap) vibrated off so now it's just the baffle and...