I have a r6 5eb and its a right pain in towns its sluggish in low gears but out on the open roads not a problem iv'e had a std air filter put on new plugs carbs cleaned and balanced but still the same.
R6 5EB CARB PROBLEM
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If your old plugs were not sooty then your running on a weak mixture up to 3,000rpm which is mostly the pilot jets.Did the pilot jets get cleaned and air/fuel mixture screws get set so that you can blip the throttle open from tickover (warm engine) without any hesitation?
Yamaha R6 1999-2001?
Hi iggs and welcome to the site
Do us a flavor mate,state the make model and year!! you know what you've got but others might not,thanks
Anyway,if your happy the carb clean and balance is sound then you may need the throttle position sensor re-setting?.