[rosbrith]

This replicates the functioning of a carburettor equipped with a mechanical accelerator pump. It squirts some extra fuel into the manifold when the throttle pedal is depressed, the quantity determined by the force applied to the pedal.

[jcoby]

What you're describing is called accelerator enrichment and does mirrror the accel pump in a carb. https://www.hptuners.com/help/vcm_editor_parameters_gm_eng_f...

Power enrichment is a different function and commands a new afr for peak power (generally around 12.5:1) instead of trying to maintain around stoich.