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can anybody help me on tracing o2 sensor wire back to ecu? i rewired my whole harness getting rid of anything i didnt need for my d16a to work in my dune buggy and somehow i cut out o2 sensor. everything runs great except my exhaust is blowin a little black smoke. i think my motor is runnin rich...

wonderin if anyone can help me with some wiring. i have an 89 d16a that i rewired to use in my dune buggy and everything works great but she blows some black smoke. i dont have the o2 sensor wired and i think thats the problem. i lost track of which terminal to wire to on ecu. Can i run...