All ECU’s use several sensors to ascertain load. Nevertheless the strategy utilised varies in between engines as the Silvertop employs a simple Vane variety airflow meter while the Blacktop takes advantage of a more elaborate vacuum (MAP) and throttle placement (TPS) for greater throttle openings exactly where there's no vacuum. https://4age-20v-itbs48147.dbblog.net/4663160/everything-about-4age-engine-for-sale