Half way into fitting air fuel gauge what i need to know is do i connect the sensor wire to lambda sensor wire in engine bay or can i connect to the o2 sensor wire on my ecu,I know o2 sensor is the same thing as a lambda i think its just will the ecu give the same reading or cause problems connected that way.thx

Car 93 wrx import by the way

 

if you know which wire it is on the ecu it will be ok...
but it has to be fitted to the pulse wire not any of the power supplys!!

 

The AFR gauge you are fitting is probably a wideband gauge. the std sensor will be narrow band so almost certainly wont drive the gauge even if you get the wires connected.

Do you have a sensor hole in the downpipe that you can put the new wideband sensor into ?

 

If its a simple narrow band like mine then this is the wire on the ECU

 

im also wanting to fit one so will see what you guys say

 

Thats great yeah if you have yrs connected to ecu and it works its good enough for me cheers for that thx