Check engine light problems & terrible MPG

My check engine light has been on for a while and my fuel mileage has been decreasing drastically the last couple of weeks. I can smell that it is running rich. I had the code read and it had three codes. One for MAF sensor, one for bank 1 sensor 1 O2 sensor and one for the coolant temperature sensor. I replaced the O2 sensor, didn't fix the problem. I have a K&N filter so I figured it was logical that the MAF sensor was the problem for sure. I cleaned my MAF sensor and didn't fix the problem so I got a new one. I unplugged the battery to reset the ECU and put the new one in. The truck starts, idles but when I give it gas it just cuts out. I figured it was a defective DELPHI MAF sensor so they ordered me another one. Still didn't fix the problem. If anyone has any idea on why the new MAF sensor would do that I would appreciate some opinions on what could be wrong. I don't want to keep chasing the problem and finding no result.

 

What are the codes

 

How long did you drive it with the O2 sensors bad? May have plugged up the catalytic convertor.

 

I ran it for a month or so. I will get the codes that it was throwing this afternoon. I have them written down at home.