There are two important differences between the new fuel flow sensor at the original one.
Fuel metering sensor.
The original narrow band oxygen sensors became factory installed standard in the late 1970s and early 1980s.
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Most of the time too much fuel will be pumped into the combustion chamber and there will be a noticeable reduction in your mpg from running too rich.
The new fia fuel flow meter samples the fuel flow rate in a different way making it harder for teams to get around the limit and the data it generates is encrypted and available only to the fia.
An air fuel ratio meter monitors the air fuel ratio of an internal combustion engine also called air fuel ratio gauge air fuel meter or air fuel gauge it reads the voltage output of an oxygen sensor sometimes also called afr sensor or lambda sensor.
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To help determining whether the fuel pressure sensor and metering valve are functioning correctly different deviations from the example signal are mentioned along with.
The signal from the fuel pressure sensor and metering valve are shown and can be downloaded.
With a lab scope a fuel pressure sensor and fuel metering valve signal voltage are measured on an engine under various conditions.