Knock Ignition Trims can be found here.

 

Ignition Angle

This runtime displays the engine angle (before individual cylinder & Knock trims) at which the ECU will fire the spark plug. This value is normally a sum of the Ignition Table value and all of the ignition trims. In some cases this value can be controlled directly without the trims being applied. Individual Cylinder Trims and Knock Trims aren't visible in this value but are applied to each cylinder as a trim on this value.

This value is displayed in degrees before top dead centre (BTDC).

 


Ignition Table 1 & 2

These runtime values show the current value of their respective tables. These values are displayed in degrees before top dead centre (BTDC).

 


Ignition Table 1 & 2 (Status)

These statuses show which Ignition Tables are active and being used to calculate the the Ignition Angle.

·OFF - Not active.

·Active - This is the active ignition table, the ignition will use the value from this table for its base ignition angle (before ignition trims).

 

If using Interpolate between mode then both tables will be active

 


Dwell Time

This value displays the current measured coil Dwell Time in ms.

Note: this value is the measured Dwell Time, not just the value in the Dwell Control Table.

 


4D & 5D Ignition Trim

The amount (degrees BTDC) of ignition trim applied to the main ignition table from the 4D & 5D ignition tables.

 


ECT Ignition Trim

This is the Engine Coolant Temperature Trim applied to the ignition timing in degrees BTDC. Positive values advance the ignition timing, while negative values retard the timing.

 


IAT Ignition Trim

This is the Air Temperature Trim applied to the ignition timing in degrees BTDC. Positive values advance the ignition timing, while negative values retard the timing.

 


Trailing Split

This is the Trailing Split value from the Trailing Split Table in degrees. A negative value indicates that the trailing spark is occurring after the leading spark and a positive value indicates that the trailing spark is occurring before the leading spark.

 


Idle Ignition Angle

This is the Ignition Angle that the Idle Speed Controller is requesting. This angle is in degrees BTDC and when the Idle Ignition control is active the Ignition angle is set to this value overwriting the calculated Ignition Angle.

 


ITrim Cylinder #1-12

These values are the amount of ignition trim in degrees BTDC being applied to each cylinder (regardless of ignition mode, if triggers don't support full sync then these values could be half an engine cycle out). These values, along with the Knock I-Trim 1-12 values are applied to the calculated Ignition Angle, a positive value causes ignition advance and a negative value causes ignition retard.

 


Overrun Ignition Trim

This is the number of degrees that ignition is retarded during an Overrun Fuel Cut.

 


Limit Ignition Trim

The amount (degrees) of ignition trim being applied to the ignition angle because one of the limits is active. The greater of this and the Launch Ignition Trim value is applied.

 


Gear Shift Ignition Trim

The amount (degrees) of ignition trim being applied to the current ignition angle from Gear Shift Control.

 


Launch Ignition Trim

This is the number of degrees BTDC that the ignition angle is being trimmed by the Launch Control system. The greater of this and the Limit Ignition Trim value is applied.

If the Launch Ignition Retard Mode is set to Degrees Absolute then the Ignition angle is set to this value overwriting the calculated Ignition Angle.

 


Anti-Lag Ignition Trim

Refer to here.

 


Torque Reduction Ignition Trim

Information on this runtime can be found here.

 


Max Ignition (Status)

This status indicates when the user-set Maximum Advance value is reached, when this status is active it also means that the current Ignition Angle is set to the Maximum Advance value.

 


Transient Ignition Trim

The amount (degrees) of ignition trim applied to the current ignition value when Transient Ignition Trim is active.

The value is taken from the Transient Retard table. See Transient Ignition Retard for more information.