2000 magnum

Ok all the down stream o2 sensors do is read what’s coming out of the cats , I would check the fuel adaptive ‘s on the up stream and check what the I.A.C. Is doing if the I.A.C. Around 30 steps your golden any thing close to 0 . It’s got a vacuum leak , what is the coolant temp.sensor reading all have an effect on fuel , check fuel pressure could even be a bad regulator ? Let me know...