It's been about 3-4 years since I did this, so I could be mistaken. I believe that the resistor mod (which I am using) is for the EGT sensor in the UP. The o2 sensor in DP needs to stay. You can search resistor mod and get the right info on that.
Pagosa Springs, huh ? I'm not that far away in Taos, N.M. and will be coming through your way, taking my daughter to a hockey tournament in Durango in a couple of weeks. Feel free to PM me. I'd be glad to help. BTW, I'm using an Ebay DP (meghan copy) and have run the cheapo N1 copy catback exhaust on my car, and there's nothing wrong with the low budg parts. You might be able to find a deal on an older AP too (used)