A car’s internal combustion engine requires both air and fuel to work properly. The air-fuel ratio needs to be optimal to ensure uninterrupted combustion and enhanced engine performance.
In the past, a carburetor was the only device that controlled the combination of air and fuel. When modern Engine Control Units (ECUs), also known as Engine Control Modules, were invented, they have significantly changed the game. They use Mass Air Flow (MAF) sensors to measure airflow.