ok, friend has a crx and is putting obd0 b16 in it..however he needs an o2 sensor for it.. he keeps askin which o2 sensor to buy but i havent messed w/ alot of obd0 veh/swaps, so i dont really know...
what o2 sensor does he need? 1 wire, 2 wire? and does he only run 1 o2 sensor or 2?
thanks for the help

 

obd0 is 2 one wire o2 sensors and obd1 is 1 o2 4 wire sensor