Lols there is some misunderstanding here..... anyway Mitsu engine had diffrent method of idling system... if you know how to go to SAS mode and understand what is "9 Step" on the stepper motor... then u understand how the systems works...

Others method might also work... eg: adjust the air Valve during engine off condition... this is the way to cheat the ECU but yet it is not the best way because it might increases the Step.