What is the role of the Mass Air Flow (MAF) sensor?

The Mass Air Flow (MAF) sensor plays a crucial role in an engine's performance by measuring the amount of air entering the engine. This information is vital for the engine control unit (ECU) as it allows the ECU to calculate the optimal air-to-fuel ratio for combustion. Ensuring the right amount of air is measured helps to improve fuel efficiency, decrease emissions, and enhance overall engine performance.

The MAF sensor's readings enable the ECU to adjust the fuel injectors' timing and the volume of fuel injected, making it possible for the engine to operate efficiently under various load conditions. This ability to accurately determine the airflow into the engine is essential for maintaining optimal combustion, which directly impacts power output and emissions control.