Global Fuel Trim :: Emtron Resource Centrehttps://docs.emtronaustralia.com.au/engine-management/tuning/fuel/global-fuel-trim/index.htmlGlobal Fuel Trim This function applies a global or overall fuel trim. This is a + or - percentage trim that applies to the Base Calibration. It allows for a rapid changes to the overall mixture and works independent of RPM and load.Hugoen-us