I'm confused as to what could be causing all this knock retard. What has me confused is it does it on pump, pump and meth, and even on E. Pretty much at the same spot. 4400-6000. I've tried more timing, less timing no difference. Then I added E in hopes that the extra octane would take it away-no luck. I don't hear anything-I'm certain this is false. It goes away after 6k. It is a little on the rich side but it doesn't really seem to matter at this point.
Here is a log and tune.
Any guidance would be appreciated-TIA!