Question: what is negative feedback knock?
Answer: 4. Feedback Knock (-1.4) in the middle of your WOT run that is fairly consistent run to run, but does not start near when you mash the throttle. The first time it drops (ex. goes from 0 to -1.4) is when the knock event happened for feedback knock - the rest is it just ramping back to zero (unless it drops again). 5.