https://docs.emtronaustralia.com.au/engine-management/tuning/ignition/transient-ign/index.htmlTransient Ignition Tuning transient functions in Emtune is done through a combination of function setup and table settings. The following runtimes are generated which are applied/added/subtracted to final base Ignition calculations. Ignition Rate of Change – The current ignition rate of change in degrees per second Ign Accel Trim – Ignition retard trim being added by accel trim function Ign Decel Trim – Ignition advance trim being added by decal trim function Transient Ignition Setup Tuning -> Ignition -> Transient -> Ignition Transient SetupHugoen-us