Ok so the throttle pots are now OK but the AFR reads as BAD, what is the AFR, is it air flow or something and what does the collective think on this one?
Air Fuel Ratio, cracked manifold or air getting in past the base of the throttle boddies. Have a look at the adaptives, you should then be able to see which bank the problem is.
I think I need a remap then, I think the ACT exhaust with the balanced headers may be a stage to far for the current map, could be wrong and will explore but I think a 12K mile service that is due about now followed by a trip to Power may be in order.