Originally Posted by
ralmo94
Turning on MAF does just that turns on the MAF, so air mass calculations are measured by the MAF, instead of calced by VE table, that's simple terms, stock is a balance hybrid blended mode that blends measured MAF with VE.
Stoichiometric is the ratio of fuel that has the most combustion heat and burns the most of both fuel and air. Rich is left over fuel to burn more air, lean is more air to more completely burn fuel.
In closed loop, your target is always stoich, that's all narrow o2's know, stoich, rich or lean. To go LC, or Power enrichment, it is open loop.
You can go open loop and run whater ratio you want, with open loop afr table. It looks more like a ve table.
Open loop calculations are based off off the stoich value.
Hope all that makes sense?