obd0 b16 o2 sensor question

[BrokenRex]

does anyone know what sensor is considered the "primary" and which is the "secondary"? i need to know which sensor the ecu wants in merge 1-4 and which should be at the 2-3 merge. i know i seen a picture on here once before detailing just that, but i cant find it.

 

[Helixform]

Bump

I am actually wondering the same thing, which o2 sensor is the primary and which is the secondary?

 

[t3t4delsol]

this post is a month old