before you turn off the wideband I suggest rereading the instructions and then calling Eric. I don't have any experience with a turbo tweak chip, I do however have xfi and i can see my actual a/f, target a/f, and o2 correction (wideband correction). if my o2 correction was +8% then that means the actual a/f was leaner than the target a/f, and the o2 sensor caught it and corrected it as much as possible by adding 8% fuel. if you turned off the wideband correction you could be harming your engine by letting it run leaner than the target a/f. maybe I'm completely wrong since I don't have a TT chip but that is my understanding of wideband/o2 correction on our cars. hopefully someone with more knowledge/experience can chime in to back me up or prove otherwise
http://www.turbotweak.com/turbotweakinstructions61.pdf
Sent from my iPhone using Tapatalk