My 2000 was doing that when i twisted up to 5000rpm it would stutter i would have to release the throttle then it would do the same thing. this was after I changed out the throttle position sensor and I did the throttle body sync. I am still trying to figure out what is causing this. Could it be a tight intake or exhaust valve? I have a new spark plugs, velocity stacks,bmc race air filter, pcIII and two brother m2 shorty slip on exhaust. Can someone please give some kind of insight on this?
is the pc mapped ?
you may have a fuel starvation issue from a slightly blocked filter (maybe)
also try running some fuel system cleaner Redex etc through it too as it often clears things like this (allow 2-3 tanks full) so it has time to work.
Thats when it's the worst. It taks a while to get above 4k
Take the PCIII off it and see if it runs better. Many times the PCIII causes lots of problems. Good Luck!
Unplug your power commander and see how it acts. If it's better, there is your problem. (common)
You can check your stator easily. Take off left fairing, unplug the stator from the harness, start the bike, take a multimeter and check the AC voltage coming from the stator. this won't hurt the bike. (stick both prongs of multimeter inside the harness and you should get at or above 65v at 5k rpm. Stick it in the other wires, then the others until you've checked all three wires.) You can check the resistance also to make sure that all three wires are connected properly to the stator. Switch the multimeter to resistance and look for a reading. (really any reading will do)
Also you might as well change the plugs. The bike can always use em.
btw original poster...who's Trina?