I'm tuning a '02 Corvette and ran into something new. I noticed during some WOT 'runs' that the commanded a/f would suddendly drop from the 12.5 I had set to arond 11.9, and the reading on my WB reflected this change. I later cooralated this occuring at the same moment of knock retard. I didn't realize that additional fuel enrichment occured during knock retard, and I can not find a way of editing this. Is this an editable parameter with HP tuners??