That's what I had heard.
Okay, then why would it do the exact same thing with a full write of my 100% stock file? And the knock starts to go away the richer it gets. It seems that O2s in the 920-940 area have stopped it and the KR is recovering from then on. You can see that in the last scan I posted.
I did all that by the full write with my stock file. Well, except the TM part. Why would adding TM make this go away?
I think we're on to something with the KR being spark reduction from a TM setting.