Which component helps increase engine performance by ensuring proper air-fuel mixture delivery?

The mass airflow sensor plays a crucial role in optimizing engine performance by measuring the amount of air entering the engine. This measurement is vital because the engine's electronic control unit (ECU) uses it to determine the appropriate amount of fuel to inject, ensuring the correct air-fuel mixture for combustion.

When the mass airflow sensor detects an increase in airflow, the ECU adjusts the fuel delivery accordingly, which enhances engine efficiency, power output, and overall performance. By maintaining the ideal stoichiometric ratio, the engine can operate smoothly, thus improving throttle response and reducing emissions.

In contrast, the throttle body controls the amount of air entering the engine, but it does not directly measure airflow. The intake manifold distributes the air-fuel mixture to the engine cylinders but does not provide real-time data for adjustment. The exhaust manifold, meanwhile, is involved in directing exhaust gases away from the engine and does not play a role in the delivery of the air-fuel mixture.