page_title: MAFless Tuning
section_title: The MAF
hierarchical_section_title: MAFless Tuning / The MAF
caption_attribution_description: English: A Holden Commodore's MAF sensor
context_page_description: MAFless tuning is a method of operating the fuel injection system on a gasoline-powered motor vehicle whereby the mass airflow meter, or MAF, is removed.
context_section_description: The MAF is a component in a vehicle's intake system through which air flows past a wire that is heated by an electric current. The airflow cools the wire, enabling the MAF to calculate the mass of airflow into the engine. The vehicle's engine management computer then uses this information to calculate the correct amount of fuel to be delivered to the cylinders by the fuel injection system.
caption: MAF fitted to a GM LS1 engine in a VZ Holden Commodore - a wire mesh screen is normally installed across the front of the MAF to smooth airflow across the wire elements - this has been removed in this photograph to show the wires
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