GSR 02 Sensor Confusion

[revzalot]

I'm swapping a GSR into my EG (VX). I'm planning to convert my VX harness for the GSR and I've noticed the GSR have two 02 sensors - one in manifold and one in cat. Can someone clarify if I need both 02 sensors or will I get away with one to pass smog. Pix would be nice on where to hook up the 02 sensor and how did you plug up the other 02 opening?

 

[99sidude]

The gsr you have is an obd2 swap. That explains the secondary o2. If you run an obd1 p72 ecu, and have a cat, passing smog should be easy. Go to a hardware store and find a bolt with that fine pitch thread to plug the bung.

 

[revzalot]

Thanks for the clarification.