![]() ![]() There is a sweet spot, its when you have a pull away with a nice crisp mid range and a nice top end, throttle transition should be smooth through this range, no surging, no stuttering - bogging - no holding back then going like the clappers. its a skill you learn over time so you must test each jet to see the reaction the scooter gives. Testing you MUST test each jet, these are NOT upgrades they are fine tuning the scooters motor to the correct amount of fuel to air mixing, you must put a jet in and try it, do not expect your scooter to run perfect the first time, it 9-10 times will run like a sick dog, choking, coughing, splurging and the likes, each scooter is different each one will want its own jet size, each exhaust is very slightly different so they to will require the jetting to match the exhaust. ![]() link to forum post on piaggio schematics : a rule of thumb we upjet by 10% - 15% ( so a 56 would be a 65 or more even upto a 70-75 at a 15% jetting rate ) start at the 15% jet rate then come down a size or two. Putting on exhausts requires an upjet in the carb, its not a put this size in and all will be handy dandy, all scooters will be different due to area they are in the weather and likes all these factors impact the jetting at that time.Īs for piaggio jetting i upleaded a huge amount of info on piaggio scoots and it includes when possible the stock jet size and the stock needle setting so well worth looking at for your zips.
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