adding 50% fuel at WOT

[Billett]

Truck is at the shop getting tuned and those guys are stumped. Apparently my truck is fine, bit at WOT it adds 50% more fuel than it needs and they have no idea why. O2s are reading fine, and they've triple checked the tune to no avail. They've actually gone so far as to send a copy of the tune out to HPT to see what they thought and they said it looked fine and not corrupted. Anyone have something like this happen? At this point I'm thinking I'll have to find another pcm. The PN on the one in there says its a remanufactured one according to lt1tech