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I have an idea for a new way of doing this.
Take the primary O2 sensor gray wire tap into it.
Connect that to a diode, just so voltage doesn't return down this wire, then to a resistor (prob. less than 100 M), then to the gray wire on the secondary O2 sensor.
My reasoning
I beleive the cat would lean out the exhaust gas thus lowering the voltage in the second O2 sensor compared to the primary. The voltage seen in the first O2 sensor would be dropped at a constant rate then and sent to the ecu as the second O2 sensor voltage.
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1996 Nissan 240SX SE
Last edited by Hobie1113; 01-29-2004 at 10:42 AM.
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