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In regards to adjusting the idle screw, the ECU basically controls the idle. That screw that we all call the "idle screw" actually controls how quickly or hard the throttle bodies snap shut when we backoff the throttle. On my bike there was a very narrow window, maybe 1/8 of a turn, where the bike would either stall at stoplites or the idle would hunt and go up to 1800-2200 RPM when hot after a hard run! In "the sweet spot" it runs perfectly! The engine must be at normal operating temperature to adjust. Basically if your bike stalls when hot adjust the screw clockwise until it doesn't and then take a hard run to make sure your idle doesn't go to 2000 RPM after a hard pull! I would only go in 1/8 turn increments since the adjustment is so critical.I played with the adjustment a lot when my bike was new but after going to map 91 it seemed to not idle at 2000 RPM or more after a hard run or it had a "bigger sweetspot!And remember as Richard says add a nut to the bottom of the screw or I use loctite. Once you find the sweet spot you don't want it to creep under vibration! I think the screw is 3MM IIRC.
In regards to adjusting the idle screw, the ECU basically controls the idle. That screw that we all call the "idle screw" actually controls how quickly or hard the throttle bodies snap shut when we backoff the throttle. On my bike there was a very narrow window, maybe 1/8 of a turn, where the bike would either stall at stoplites or the idle would hunt and go up to 1800-2200 RPM when hot after a hard run! In "the sweet spot" it runs perfectly! The engine must be at normal operating temperature to adjust. Basically if your bike stalls when hot adjust the screw clockwise until it doesn't and then take a hard run to make sure your idle doesn't go to 2000 RPM after a hard pull! I would only go in 1/8 turn increments since the adjustment is so critical.
I played with the adjustment a lot when my bike was new but after going to map 91 it seemed to not idle at 2000 RPM or more after a hard run or it had a "bigger sweetspot!
And remember as Richard says add a nut to the bottom of the screw or I use loctite. Once you find the sweet spot you don't want it to creep under vibration! I think the screw is 3MM IIRC.
