O2 sensor

I have a 94 honda civic with a 96 jdm b16a swap. Since my car is obd1 and the engine is obd2. So far I have been able to use the obd1 harness on the motor without any major problems. I have a p30 ecu which requires a 4 wire o2 sensor. my cx harness only supports a 1 wire o2 sensor. So my check engine light stays on and my ecu is throwing a code for it. I was wondering if anyone has had this problem before and/or if anyone can think of a solution. The only thing I could think of would be a something like a Venom 400, or some type of device that iterrupts the signals between the ecu and the sensors. Any help would be greatly apreciated.

Convert it to a 4-wire O2. No reason to trick the ECU with a device, when you can just do it the correct way.
http://www.hybridautomotive.com/tech/o2/#one