Ok guys I need some help

[2007chevy5.3l]

So I have been working on the VVE for awhile and think I have it about right. The WOT is still a bit rich and I will eventually get some full throttle runs in to smooth that out, I never could get the idle to come off 12s AFR so I left that too... I went ahead and turned the MAF back on and put that back into the picture. Is it ok to run in OL with just the MAF on? Also, at idle im curious to know why im getting random knock? The timing seems a little weird too.. Can you guys take a look at the VVE and log to help me figure out whats going on?

Tahoe Speed Density VVEfiliveStock4MAF.tun

OLSDMAF2.efi

[2007chevy5.3l]

Im definatly going to have to richen up the MAF espically during cold start up.

For reference my mods are CAI/Longtubes w/ORY and NGK TR6 plugs. E38 ecm