on a JDM B16a where is the O2 sensor located? is it under motor by the cat? on the header? or is it on the Cat. i stick to preludes and my friend says he cant find it. i know on some del sols they are right be the cooling fan... let me know so i can tell him exactly where to look. this when into a 94 2dr civic.
thanks

 

On my B16a there are 2 O2 sensors. Both are located on the primaries of the stock header.

 

hmmm