Have you compared the flywheel bumps on your bike to pictures posted on the web? There was an issue on earlier bikes with the signal timing being off due to the length/location of the bumps. I thought those bikes needed new flywheels?
Other upgrades have to do with larger wire gauge for the starter/ground cables and making sure all paint is removed from grounding locations. That's all I know about the newer machines.
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2011 EC250E
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