The primary VE table is the main fuel map. It is the VE (percent of cylinder air fill) and therefore is used to compute the matching amount of fuel injection duration based on all other factors (such as engine size, injector flow rate etc) as set in other tables and driver settings dialogues.


The left axis is LOAD which will either be Manifold pressure (as KPA) or Throttle Percent (in %) as set in the Engine Drivers Algorithm Configuration Section.


You can see it below, shown as a 3D table under the Mapping Tab:


You would tune this table such that your desired AFRs are met, but before doing so, make sure you set the axis as you wish (for example if using throttle for load then the load axis needs to be a 0-100 listing) whereas if you are running a turbocharged engine running an expected 1 Bar of boost (200Kpa) then it should go from around 30Kpa (typical idle/overrun vacuum) to 200Kpa to allow tuning of al possible manifold pressured. Double click the load numbers to change them.


Likewise for the top row, showing RPM, you should set this to mirror your engines possible RPM ranges.


You would then tune the VE table such that your desired AFRs are met for all Load and Speed points. Then, view it as 3d table and "smooth" it out as a VE table will always typically be smooth with no jagged spikes or cliff edge transitions.


More information about tuning the VE table is here.