Hi, hope somone can help, i have an unsteady idle witch is realy anoying. The car is a completley standard 1998 EP91 manual turbo. It has recentley had new plugs, leads, and injecters cleaned. This was before i purchased the car. My question is , if the injecters are cleaned does the ecu need to be reset for the right fuel air mix. or do you think it is the idle control valve. If the ecu needs reseting does anyone know the procedure. Cheers