There are a few blurbs about this here and there around the forum. Not much detail, and surely nothing on the math behind it or the calibration of it.
Chris posted:
They are found under: Engine>Airflow>Dynamic>Prediction Coefficients
There are 10 tables (in my cal).
Each of these tables has 30 (0-29) columns that correlate to the 30 zones of the VE coefficients.
This is the zone numbering scheme for the 30 zones:
This is an example of zone boundaries (found right above prediction coefficients):
I have looked at a number of Gen IV calibrations... Some have zeros, some have values, and those with values are wildly different.
Even more difficult (visually on the fly) is correlating the location of the cells to what they actually mean.
I put together this spreadsheet to see if there is a correlation. This data is from a 2012 ZL-1. Good example of inconsistency, is that the CTS-V (Sigma II) with the same engine has all of these tables zero'd...
And looking below, you will see values much smaller than 1/-1 and some as large or small as 300/-300 (some even right next to each other!).
Anyone want to share their experience and knowledge of these tables? I assume they are functioning and help MAF predictions, so they seem important.
Prediction Coefficients.xlsx