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Re: Why more Ford set P0171's than GM
Posted to Technical Theory Forum on 11/25/2007

Hi Rags,

If I am understanding this correctly, the baro reading is calculated by the PCM from inputs from MAF, and IAT. So if the MAF is skewed then the resulting baro calculation will be wrong. Correcting the skewed MAF will also bring the baro into correct... Login to read more.