You can purchase an "O-2 Emulator" module for $45 at ZZP. I recommend also wrapping the downpipe with header wrap due to the heat sensitivity of the emulator. The emulator plugs in where the rear O2 sensor was plugged in. You can remove the O2 sensor and plug the hole with an oil drain plug from Auto Zone. Bring the O2 sensor in to match tne theads. I've had mine on for about a year now with no problems. The emulator tells the PCM that all is well between the two O2 sensors which translates to "your cat is doing its job". This may be easier or cheaper than a code removal.
TMC
