See this link for more details
http://www.motec.com.au/aboutknockcontr ... koverview/But to summarise. Yes, the latest Motec hundred series software can do closed loop knock control, but you need to use the motec knock module.
The knock module takes in the signal from knock sensors, as well as a knock window from a MoTeC hundred series ECU. (A knock window is an ignition timing based signal, generated by a MoTec ECU, used by the knock module to tell it to only listen for knock during a defined window based around an ignition event)
So to do this, you need
a standard knock sensor
A Hundred series MoTeC ECU
A MoTeC knock module
-Jamie Augustine