Re: 2003 R6 Mechanical Help
We need more info like mileage, recent error codes if any, etc etc. Anything you can do to provide a little more back story helps everybody help you. It just helps limit the number of "shot in the dark" responses.
I would also suggest forum searching. I am pretty sure this topic has been discussed.
My "shot in the dark" response would be, have your valves ever been adjusted? The valves could be getting tight and as they expand due to the heat it could be causing them to stay open. This can cause the engine to stall and cause a bad idle. But, again just a guess until more info is presented.