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Sorry if this has been posted or documented before, I searched. In the logger, is dynamic airflow the filtered MAF/SD thing, or just the speed density output? I'm guessing the other input I see, "MAF airflow", is the Hz->g/sec output directly from the MAF, right?
I'd like to compare VE and MAF airflow to see if something is crazy in my PCM, or if my MAF is dying.
Simple experiment: log dynamic airflow, VE airflow, MAF airflow. Display them on the same chart with the same axis scaling. See whether the dynamic airflow is identical with one or two (but in different situations) source signals.
Ah, but I don't seem to have VE airflow. Am I supposed to on a 2000 Camaro PCM?
Not that I know of. Newer ECU have it. However, you can create a custom PID for the VE airflow from its components and compare that.