I swapped a JDM 96 B18c into my 99 Civic ex. Is there any difference between the o2 sensors? Can I keep my original o2 in the cat or should i put the o2 that came witht he swap in? I also converted to obd1 so it's only looking for that one. If I need to swap in the b18c o2 whats the best way of going about that because the plugs are different(ex. EX o2 is a female and GSR o2 is a male). Appreciate the help guys!

 

Anyone?

 

You can use your original o2 Sensors. They are the same for both motors.

I do believe, but don't quote me on it though that the primary o2 is different from the secondary o2.

 

You can use the primary or secondary O2's in either location. I have a secondary GSR O2 as the primary O2 in my 92 VX with B18C1.