does my bike need to throttle body sync?
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Bike Model = : gt250 EFI 2009
well today i turn that even if your bike is EFI, you still need to make sure the throttle body is sync. wow…… so. there is a sync nipple that connect hose to sync on the carb version. but in EFI i see no nipple. only sensor. TPS, MAP, where to connect the sync tool? and where to adjust.
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The throttle bodies have air lines coming from the ISCV unit , it is possible to measure how much air is being drawn on full throttle / half-throttle , or switch of the bike with throttle closed , it is possible to measure if the throttle butterflies are fully shut.
Also if you take off throttle bodies off and take sensors off , then pour a little bit of oil down there, and see if the butterfly leaks out on the other side ? = this isn’t fool proof, so it is just an idea! = I did this on a row of carbs for Kawasaki ZZR , because i had to be sure all butterflies were equally opening and closing so each cylinder gets the same air flow.
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