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Factory maf sensor

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Can the plug in ecu use the factory maf sensor at all or is it just used for temperature?  I see that there is an input for that pin on the ecu that is marked "maf" but if I look in the maf setup table it only lists a Subaru maf sensor for a selection.

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It can be used but it is not normally recommended.  If there is no built in calibration for your car (there should be 2 subaru and 1 evo option) then you have to find that data yourself or work it out empirically.  Usually easier to use MAP.

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