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2. Mass flow sensor - Wikipedia

   en.wikipedia.org/wiki/Mass_flow_sensor

   A mass (air) flow sensor (MAF) is a sensor used to determine the mass flow rate of air entering a fuel-injected internal combustion engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density with temperature and pressure.

3. OBD-II PIDs - Wikipedia

   en.wikipedia.org/wiki/OBD-II_PIDs

   Intake air temperature -40 215 °C 10: 16: 2 Mass air flow sensor (MAF) air flow rate 0 655.35 g/s + 11: 17: 1 Throttle position 0 100 % 12: 18: 1 Commanded secondary air status Bit encoded. See below: 13: 19: 1 Oxygen sensors present (in 2 banks)

4. MAP sensor - Wikipedia

   en.wikipedia.org/wiki/MAP_sensor

   MAP sensor data can be converted to air mass data by using a second variable coming from an IAT Sensor (intake air temperature sensor). This is called the speed-density method. Engine speed (RPM) is also used to determine where on a look up table to determine fuelling, hence speed-density (engine speed / air density).

5. Flow measurement - Wikipedia

   en.wikipedia.org/wiki/Flow_measurement

   In many late model automobiles, a Mass Airflow (MAF) sensor is used to accurately determine the mass flow rate of intake air used in the internal combustion engine. Many such mass flow sensors use a heated element and a downstream temperature sensor to indicate the air flowrate. Other sensors use a spring-loaded vane.

6. O'Reilly Auto Parts - Wikipedia

   en.wikipedia.org/wiki/O'Reilly_Auto_Parts

   O’Reilly Automotive, Inc., doing business as O’Reilly Auto Parts, is an American auto parts retailer that provides automotive aftermarket parts, tools, supplies, equipment, and accessories to professional service providers and do-it-yourself customers. Founded in 1957 by the O’Reilly family, the company operates more than 6,000 stores in ...

7. Air flow meter - Wikipedia

   en.wikipedia.org/wiki/Air_flow_meter

   An air flow meter is a device similar to an anemometer that measures air flow, i.e. how much air is flowing through a tube. It does not measure the volume of the air passing through the tube, it measures the mass of air flowing through the device per unit time, though Thus air flow meters are simply an application of mass flow meters for the ...