When I pulled my manifolds off to put headers on my '87 R10, I had the pull off the O2 sensor. I didn't think I would have one, but I guess I did. (I guess it does make sense seeing as though I have TBI).
I never got a new one for my headers, but I can't really tell if I even need it or not. My exhaust smells pretty bad, so I guess it's possible that I'm burning too rich/lean without the sensor. I might be burning oil though.
What do you guys think? I've been driving it for about a week without the O2 sensor with no problems.