A speed density air-fuel system works differently than a mass airflow system. Learn how it works and what can go wrong A speed-density air-fuel system is a type of electronic fuel injection system that calculates the amount of fuel to be delivered to the engine based on the engine’s speed and manifold absolute pressure (MAP). The system uses a MAP sensor to measure the air pressure in the intake manifold and the engine’s speed to calculate the engine’s airflow. The computer then uses this information to determine how much fuel … Read More
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