https://docs.emtronaustralia.com.au/engine-management/tuning/fuel/secondary-balance-table/index.htmlSecondary Balance Table The Secondary Balance Table describes the ratio for the volume of fuel delivered by each injector to make the total amount of fuel for the injection event. 0% means all fuel is supplied from the primary injectors 100% means all fuel is supplied from the secondary injectors 50% being equal volumes of fuel out both primary and secondary injectors. If the injector settings are correct, table adjustment should have minimal affect on the tune.\Hugoen-us