The 5.0OBD 4 cylinder with 8pcs injectors dual-fuel ECU is suitable for 4 cylinder with 4pcs injectors and 8pcs injectors dual-fuel vehicles. A 32Bit microcontroller and advanced engine control design to ensure air, fuel, leak diagnosis, OBD and emission control (Euro VI). The innovative integration of all 8pcs injectors simulations and controls into the ECU reduces the installation difficulty of external simulators and effectively increases reliability. ECU collects the fuel injection signals from 8pcs injectors at the same time and uses Ex-HIGHRISE patented algorithm to optimize the performance of the dual-fuel system, further improving the acceleration performance and idling stability of the vehicle.