Awesome info..i need to do this as I am getting the CEL for this. I have a test pipe. I am going to the parts store right meow!
...and advise for those of you who are having trouble getting your o2's out. Heat up the o2 sensor bung with a torch or something very hot and then use vise grips to get it out. This is what I had to do. I tried everything...even a pipe wrench and I just stripped my old o2 sensor into a perfect circle.
