https://docs.emtronaustralia.com.au/engine-management/tuning/ignition/ignition-global-trim/index.htmlApplies a global ignition trim. This trim is a +/- off the calculated ignition timing. It allows for a quick trim to the overall ignition timing and works independent of RPM and load. Units: Deg Min Value = -100 Deg Max Value = +100 Deg Typical : 0 DegHugoen-us