I am hoping everyone can help me out because i am at the end of my rope. I have a 2006 2500 Ram Hemi, removed the cats put in defoulers and my passenger rear O2 is throughing codes. I cant remember the code right now, but the code tells me that the O2 is bad. I replaced it once, code went away for about a month then came back. I dont want to have to replace O2s every few months while i am saving up for my tune. Any ideas on what is happening? do i have a short in the O2 wire some where, or am i fouling out my O2s by not running cats? Any help would be great.