- Jul 25, 2014
- Olympia Washington
- '14 R3R, '02 Daytona 955i
Also, the value shown below the idle % in Tune ECU is the number of counts the idle control stepper motor is from home. Thus the greater the count the farther the stepper had to adjust to hold the programmed idle rpm. Hint; too high and the stepper can't physically extend further. Below 25 counts, the idle rpm may stay above the programmed value as the stepper can't retract further than to 0. This value changes as the ECU actively manages idle speed. So, if that value is changing much and the idle rpm is not, there is a problem or the converse is true as well. The throttle cable can be adjusted too short so it acts as the idle stop, or the TB linkage may be stuck, etc.
Great suggestions, this little bit, brilliant, I hadn't realized that relationship myself, great to know!