hey guys i put a ls in my 2000 civic dx everything turn out good, except for the 02 sensors. As u kno obd2 has 2 and obd1 has 1 but i used my obd 2 wireing harness, so i just have one o2 just hanging cause i dont have no place for it to go. what do i do ? , is there a way to make one out of two? i think it is making my car run lean. help me out thanks

 

what ecu are you planning to use?

If you convert to OBD1 and use an OBD1 LS ecu (PR4/P74/P75) you don't need to worry about wiring in a 2nd 02.

So if you convert to OBD1, you don't need to worry about the 2nd 02 at all. Just unplug it and leave it dormant.

If you plan to use an OBD2 LS ecu, then you will need to utilize the 2nd 02 plug, extend the wires so that you can plug the 2nd 02 to your cat.

 

ok but theres 2 some which one do i plug in and which one do unplug , how can i tell the diffence because i kno one is primary and one is seconary

 

bump

 

bump