https://docs.emtronaustralia.com.au/engine-management/config/triggers/multi-tooth-setup/index.htmlMulti Tooth Setup This allows the user to define a Custom decoding mode for the ECU to use. In order for the ECU to synchronize timing of the engine, an “index tooth” position must be identified. : The following settings are configured in this menu item : Crank Tooth Count. See Crank Tooth Count for more information. Missing Tooth Count. See Missing Tooth Count for more information.Hugoen-us