When I fired up my bike today it idled at around 4K RPM.
Since it was a cold morning I decided it would probably settle down after a minute or so.
Remarkably the bike kept idling around the 4K mark. Since I lubricated the throttle grip I figured I accidentally refitted the throttle wron, taking out all free play by accident.
After some roadside repair time I ruled out the throttle cable. So next thing was to see if a vacuum haso had come off.
All the hosed were fine which made me suspecious of the AIC / stepper motor.
It turned out the AIC was stuck open. After taking it off the airbox I manually moved the AIC piston and refitted it. After this the bike was fine.
Which brings me to my question: have any of you ever had the same problem with the stepper motor being stuck open and not responding?