Volumetric Efficiency VE Table Calibration
We only need three sets of Channels to calibrate the VE Table.
Engine RPM
Manifold Absolute Pressure
Fuel Trims
How do you know what Channels you need?
Well you look at the table you are going to tune and make sure you can build a Histogram (graph) to match.
For example, we look at our VE Table and see that the X axis is made up of
Engine Speed (rpm) so we know we have to add the Engine RPM (SAE) channel, the names don't match exactly but that's just how HP Tuners does it, you get the idea though, it's basically RPM.
Same goes for the Y axis, the VE Table in the VCM Editor has
Manifold Absolute Pressure (kPa) as the Y axis, so we add the Intake Manifold Absolute Pressure (SAE) channel in the VCM Scanner.
And the values in the table come from the Short Term Fuel Trims and the Long Term Fuel Trims because we are using them to calibrate in Closed Loop as opposed to using a Wideband, that's a decision we made ahead of time.
The SAE is the default flavor of the channels that's all, some folks grab them first some grab the ones without the SAE suffix.
Once you added your channels I suggest you save them for future use.