Quiz: How does the engine control unit (ECU) contribute to engine March 7, 2025 by Alex Turner How does the engine control unit (ECU) contribute to engine performance? Discover more about Vehicle Engine and Automobile at our home page. A) It regulates fuel injection and ignition timing for optimal combustion. B) It monitors tire pressure and adjusts steering alignment. C) It enhances the aerodynamics of the vehicle to improve speed. D) It controls the air conditioning system for passenger comfort. Submit Answer