I recently pulled a P1167 code after getting a CEL. I understand this is the bank 2 sensor (on the header closest to the radiator). I would also add that I have hotshot headers, EB tuned, TS L-spec ECU, hi-flow cat, cat-back exhaust and I extended the secondary 02 sensors behind the cat (my b-pipe has 2 extra bungs welded in). Could my extension of the secondary sensors cause this code?

I've been considering adding a wideband 02 sensor and I was thinking about doing this rather than buying a new OEM sensor. I have a little knowledge on widebands but definitely not an expert.

For those of you with widebands, what did you do about your oem 02 sensors? Did you install a sim to prevent the CEL or just live with it? Also would the WB replace all of the other sensors and if so did you plug your old ones?
Lots of questions I know, responses are much appreciated.