I know the info is around here somewhere, but taking the easy route.

I would like to create a histogram of %difference in Dynamic Airflow and MAF against MAP/RPM. I have already logged the data needed, but no PID setup for the difference. I understand the steps are to create PID first, then histogram… BUT this extra unnecessary PID would take bits from my logging.
Maybe I’m misunderstanding something.

Also are injector DC and Cyl Airmass taking away logging resolution… these are just calculations. Or is the resolution more based on HPT interface then obd II? I guess I could just calc afterwards, but then I can’t use in histograms correct?

Newbie here trying to get a grasp on this. Thanks for any help!