i need help w. o2 sensor.. i just did a swap from y7 to y8... on y7 both of the sensors were on the headers.. and on the y8 there is the o2 sensor at cat.. since i swaped the wires also now i dont know how to make the secondary o2 sensor connected to ecu.. do i run just an other wire to ecu... or running w.out the secondary o2 sensor if is fine.. i did my search but couldnt find anything...
Thanks in advance.

 

What wires did you swap? The 2nd o2 sensor should plug right into your harness.

 

For the secondary o2, all you need to do is extend the wires right?

 

the problem is that the harnes that i had for my y7 i sold em.. when i got the y8 i swaped it w. all the engine harnesses.. right now i see only the first o2 sensor.. o2 secondary should be at the cat conv.. so now im confuesed.. how to get the o2 sensor connected anywhere.. cuz i dont see any secondary wire

 

help

 

up

 

try extending the wires..might throw some codes though..not shure..mine did when i put in a header and ex cat