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  • P0402

    I got a 1999 3.8L Camaro
    3"in/out Carsound Cat
    3" piping all the way to Flowmaster 80s...

    How many O2 sensors am I supposed to have for my car. I have 100k miles and I'm thinking that might be throwing the P0402 code. Or do you guys think I should have a O2 sensor pre cat and a 02 sim post cat?
    Whisper Lid, SLP CAI, KN Filter, 3\" HiFlo Carsound Cat, full 3\" mandrel-bent piping, Flowmaster 80s, Casper O2 Sim, BM Tranny Cooler, Vigilante 3300 Torque Converter, Corvette Servo, 3.42 gears, SLP take-off LSD, Manual Fan Switch, & 160 Thermostat.

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