Ok IA, I need some help onece again. Here's the rundown. I've got a 95 integra with a 96 gsr swap integra it. (Obd1 car, obd2 motor) everything is wired for obd1. The entire exhaust is from my old 96 gsr. So the cat has spots for 2 o2 sensors. I've been using the one closest to the front. I've been looking to replace the o2 sensor but when I look for one I find both upstream and downstream. Now I'm questioning if I'm even using the correct sensor and which one i need to purchase. Also I'm replacing due to a CEL 43 (fuel supply system). If I'm gonna throw parts at it, I figured id do the cheaper and easier installs.
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