MoTeC Knock OKM - Manual (Page 18)

18 Configuration
Tuning Knock Control System
Note: The following tuning is a specialised job, to be carried out
by experienced technicians. Incorrect operation can easily cause
severe engine damage.
The knock control system will retard the ignition timing depending on the level
of knock. There is an instantaneous setting to reduce the knock levels
immediately and a long term retard setting to prevent knock re-occurring.
i2 data showing the instantaneous (short) and long term retard effect on knock levels