When asking for technical help at the very least let us know the version of firmware you are running.Cliff's Calibration (Mapping) Guide is a MUST READ: http://www.vemssupport.com/forum/index.php/topic,97.0.html
Just a little more on this. In Knock Control action, what is the ' Threshold' and the 'Noise Scale Factor'I have values of 255 in both these. I know they may well be specific to the engine, but any ideas on a start point?