The Mass Air Flow (MAF) sensor is a critical component in modern engine management systems. It accurately measures the volume and density of air entering the engine, providing vital data to the Engine Control Unit (ECU). This data allows the ECU to precisely calculate the amount of fuel needed for optimal combustion. Proper functioning of the MAF sensor is essential for maintaining engine performance, fuel efficiency, and reducing emissions. A faulty MAF sensor can lead to various drivability issues, including rough idling, hesitation, stalling, and decreased power. Replacing a malfunctioning sensor with a quality part like this MAGNETI MARELLI unit can restore your vehicle's performance and efficiency.