FlashPro questions & answers specific to the 2007-2008 Acura TL
Read and understand the help file about the way knock retard and knock ignition limit works. If you knock ignition limit is 20+ degrees, as in the posted calibration, you are never going to get any sort of knock control. Also be aware that the ECU knock control is not a substitute for tuning.
Some ECUs do not report the knock level - it is internal to the knock processor not the main processor. The knock control logic still works. With the knock ignition limit disabled, the knock control is also disabled.