At idle, appears only the left bank has the 108 BLM (-15.6%). Right bank shows "0%". This same discrepancy shows up in some other cells, with the left generally showing a larger negative correction than the right. When you go WOT, since its pulling fuel, the BLM's go to "0%" and the left and right O2 sensor values appear to be very consistant, with less than a 10mV difference.

You didn't log the "Cell" numbers, so its hard to correlate the degree of "split" in the BLM's to engine load and RPM. Seems like if there is a "problem" its affecting the left side of the engine a lot more than the right. Could just be the "split" BLM problem at idle.... what TB do you have?

 

going off of what Fred posted above those split BLMs at idle are characteristic of a PORTED or DESCREENED MAF. Or possibly "cracked open" throttle blades which some people mistakenly do to lower the IAC counts which can cause the split BLMs.

Personally I would make sure you are using a 100% stock unported, SCREENED MAF and try data logging but this time include the CELL NUMBERS to see if the Split BLMs improve. A ported MAF will definatly cause problems but a descreened MAF usually wont cause any but it doesnt hurt to put hte screen in and check to make sure.

Another Idea would be that you are using 24lb SVO injectors, which are rated the same fuel flow but they operate SLOWER then stock fuel injectors. Usually the PCM can correct for this but its better if you have the correct voltage offsets entered into the PCM. I fought with split BLMs on my car to find out my cam was way to big for closed loop mode but I corrected ALOT of the split BLM idle condition, it turned out to be a combination of things and not just ONE problem.