This menu selection will display a form used to modify ignition timing and fuel delivery for each individual cylinder.  In order for your ECU to retain and use these settings, your system must be a sequential system with the Individual Cylinder Control option installed.  If you have a sequential system without the Individual Cylinder Control option installed, you are able to try this feature.  The settings will work, but they will be erased every time you remove power from the ECU.  Adding the Individual Cylinder Control option will keep these values stored in an area of memory that isn't erased when the ECU is powered down.

The left hand column on the form is used to specify a percentage of fuel to add (positive percentage) or remove (negative percentage) for the indicated cylinder.

The right hand column on the form is used to specify a number of degrees to retard the ignition timing signal for the indicated cylinder.  This field can only be used to specify a timing retard; it cannot be used to advance the timing for that cylinder.

In order for the edit fields in this form to be mated to the corresponding cylinders, the firing order must be entered into the ECU.  This is entered into the “Edit Display Firing Order” field under the System Configuration menu.

It is necessary that the ECU receives a cam sync signal from the engine between 10 and 45 degrees before the #1 ignition pulse.  In order to verify that this is set up correctly, enter a 10 degree timing retard for cylinder #1 and verify with a light that the timing for cylinder #1 is retarded by 10 degrees.  Most ECUs will only enforce these corrections when the throttle position sensor reads higher than the Maximum TPS for Idle setting.  ECUs produced in 2001 and earlier would enforce these corrections regardless of throttle position, but would only enforce them above 2000 RPM.