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2019 Mustang GT incredible MAF row axis
Today I tried to tune a 2019 Mustang GT with JLT CAI. Simply thing normally. This time I tried to use the factory row axis from the [ECM] 44317 - MAF Airflow vs. Period. Did some other adjustments in spark and torque section to get a good result. Butt on every pull I got IPC wheel torque error and the torque wrench comes up. I go back to stock step by step, still IPC wheel torque error. Again and again. Finally I fixed that error with a different row axis for the MAF airflow table. Added back all power adjustments and the car rund perfect and add some serious numbers. Can someone explain why the scale of the row axis can produce IPC wheel torque error?
The MAF curve was not perfect, but it was not more than 5-10% fuel trim error. In any case not enough to get this error.
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