Jetting CBR 600 F4

[cbr_ryder]

I have a full yosh exhaust system w/ K&N filter I jetted my bike exactly how the instructions said to...At full throttle at about 8000-9000rpm my bike starts to hesiate, stutter and bog down. Has anyone jetted this bike before with similar mods? If so what jet set up worked best for you? If anyone else has any suggestions for fixing this problem I would really appreciate it.

[Wolfy]

I had the same problem with my 2002 zx6r, one of the jet needles didnt set right, and the vacuum slide got stuck open in high revs.....best thing to do is check everything over, pain in the butt, however cheaper than shop rates to check it

[m10-power]

What jet kit did you use? I assume dynojet
Which jets did it say to install, did you correct for our altitude? You should be running at 12% smaller jet for Calgary then what they typically supply. If you have the right size jet then you may have the needle a bit too high as your probably running too rich on the transision to main jets.