well someone who knows more about the n/a than me look at his o2's and tell us if they are normal. there in the 800's when he's getting the kr.I think thats lean but im not to sure being it's with the n/a instead of the l67 sc'ed. But just by looking at it you look lean.As said before as soon as your trims lock in at zero you get knock. try adding to the maf table from the p/t-wot section up.
again sorry if im not making any sense but im unfimilar to your situation and am trying to relate my tuning experience to the problem your having in hopes of helping you someway.
