All ECU’s use many sensors to determine load. However the method used varies between engines since the Silvertop utilizes an easy Vane variety airflow meter even though the Blacktop utilizes a more complex vacuum (MAP) and throttle place (TPS) for much larger throttle openings where there is absolutely no vacuum. https://gorillasocialwork.com/story19808892/5-easy-facts-about-toyota-4a-ge-described