Yes, and no. The MAF must still be in place, must remain unmodified, and all intake air must pass through it. However, in now way, shape, or form does it have to be 'functional'; you can simply tell your ECU to ignore it and use the MAP sensor. Or, since ECU wiring is effectively free, simply don't terminate the MAF wires to the ECU at all.
But, again, it must be there and all intake air must pass through it.
GA
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