Advanced Idle Control Features

Idle tables for cranking taper

Setting this value to true enables the use of the Idle Ignition Table and Idle VE Table during the cranking to idle taper period. See Cranking Settings > After cranking IAC taper duration (cycles). If set to false these tables are only active when idle is detected; see Idle Detection Thresholds section of the Idle settings menu.

Coasting Idle tables

Setting this value to true will enable the Coasting IAC Position table. This will manually over-ride the Idle Air Control valve position during the coasting phase. This can be used to help reduce engine braking and may be useful if the engine has difficulty returning to idle.

The coasting phase is determined by first checking if the TPS (or throttle pedal position if using ETB) is less than the TPS Threshold. If so, FOME next checks if the current RPM is greater than the maximum idle RPM (Idle Target RPM + RPM Upper limit) and the engine is no longer in the cranking IAC taper duration. If all of these conditions are true, the engine phase is coasting and the Coasting Idle Table is used.