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Discussion Starter · #1 ·
I just had my Yoshi S/O installed and tuned with a Factory Jet kit. The bike runs great above 7500 RPM, with the new main jets, but below 7500 it seems to surge at constant throttle. Even at idle the RPMs fluctuate about 200-300 rpm. The guy at the shop that did the tuning said that with the jet kit I gave him that it turned the bike basically into a race bike for high RPM riding and the low rpm surging would be normal. I can certainly feel the additional tuning in the upper rpm band, but what about low. Is it normal for tuned bike to surge a little at lower rpms? It is not a huge deal, but just riding around town it gets kind of annoying.

Any thoughts would be appreciated.
 

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Buy a flo-commander. it could only help.

It sounds to me like your carbs arent synced. the flo commander wiill cure that and make it much more drive able adn gives you more low end response..

:cheers
 
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