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This paper describes a fuel management known as engine air control as opposed to the more conventional management technique, or engine fuel control. When applied to an internal combustion engine, conventional fuel management systems utilize fuel modulation, where the human is in direct control of the intake air-throttling valve. Here, the throttle indirectly controls the airflow into the engine. The fuel management controller determines the air flowing into the engine and based on the desired air fuel ratio, calculates the appropriate amount of fuel necessary, based on the desired performance index (minimize fuel, maximize power, etc.). In an air control system, the human is in control of fuel flow as opposed to airflow. The engine management system interprets the human input as a desired fuel flow rate, and must calculate the proper amount of air necessary to obtain the desired air fuel ratio. The controller must also deliver the correct amount of fuel to the engine.