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  1. Joe98GT

    Shop in CT that can shut off rear 02 sensors?

    I'm new to the Mustang scene...car is a 98 Gt Vert Auto (my lady friend's car) , all stock except MAC in the fender CAI and a BBK catted X pipe. I keep getting CEL for the 02 sensors. I just recently did the capacitor and resistor mod but a day later the light comes back. I would just like to...
  2. Joe98GT

    Help with O2 sensor placement

    I had a BBK catted X-pipe installed and a few months after install the SES light came on and it was P0420 "Catalyst effeciency below threshold bank 1" so after doing some searching I just recently did the DIY Mil eliminator mod. Next day the light came back on. I have 2 questions: 1. it says...