I have a front clip of a JDM '91 Galant VR4 that has a second oxygen sensor after the cat. I'm not much of a DSM guy yet, but I do know only later year 3000GT's have these and they're required. I did find some threads here about the CEL being thrown, and how you can plug the hole and attach the O2 to the side of the exhaust to cure that... but these were all related to 2g's.
Anyway, my question is, on this first gen engine, will removing that O2 sensor cause a CEL to be thrown? If the CEL code is thrown, will it cause anything to actually happen, or can I just ignore it? I will be using the ECU it came with, and the engine is going in an 86 Conquest with a totally custom exhaust, so I'm trying to eliminate as much BS as I can.
Oh a side note, this is something thats hard to search for since everyone types "O2" and the search parameters must be atleast 3 characters.
Anyway, my question is, on this first gen engine, will removing that O2 sensor cause a CEL to be thrown? If the CEL code is thrown, will it cause anything to actually happen, or can I just ignore it? I will be using the ECU it came with, and the engine is going in an 86 Conquest with a totally custom exhaust, so I'm trying to eliminate as much BS as I can.
Oh a side note, this is something thats hard to search for since everyone types "O2" and the search parameters must be atleast 3 characters.