I have a 2006 with four wheel drive. I have the AFR sensors in the manifolds and the O2 sensors in the b-pipes.
I just had Uprev install Long Tubes and Berk B-pipes. I picked it up yesterday but just got under it today to look at the stuff and noticed they had capped off the bungs on the Berk's. The O2 sensors are gone, the plug they attach to is sitting bare-ended (not good, need to at least cover that).
Since no one else has mentioned getting rid of the O2 sensors, I am wondering why Uprev did that? any thoughts? It's tuned and not throwing any codes despite the total absence of O2 sensors. They hadn't mentioned they were going to do that (or keep my sensors), so I am going to call tomorrow to ask but wondered if anyone else is running without O2 sensors and not getting codes.