My Ninja H2 has 'miss' at high RPM's
Sounds like you may have a boost leak as pressure increases with RPM. The most common spot on the H2's seems to be at the clamps which secures the orange hose between the plenum and supercharger. Many times, simply tightening the hose clamps cures the problem.
Otherwise, check all clamps and connections relevant to pressure/boost.
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