Did you watch my videos? That should help you a lot. Try to avoid splicing the wire. That can cause issues. Try hard to just unravel the existing wires.
Even if you relocate the bungs you still might get an error code because the north american cats are too short to clean the exhaust enough to not set off the senors. People have gotten tunes to solve that problem. You could also try a defouler but that is just trial and error. There are even defoulers with mini cats in them.
My video:
http://www.zpost.com/forums/showthre...ing+o2+sensors