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Thread: O2 Sensors

  1. #1
    T/A is in Bahrain! 13nickels's Avatar
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    Red
    1998 Trans Am WS7

    O2 Sensors

    Just installed my OBX LT headers with loud mouth 2 cat back. im getting a 420 code, which is for the cats. The cats are high flow. I bought a max energy hypertech unit and put that tune on it. Is there an easy way to fix this, am i missing something?

  2. #2
    cutting and welding mark21742's Avatar
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    hugger orange
    2004

    it happens a lot with hi flow cats, they work but not enough to keep the rear o2s happy
    what programmer are you using?
    your best bet is to delete the rear o2s in the computer if you have hptuners program l can walk you through it

  3. #3
    T/A is in Bahrain! 13nickels's Avatar
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    bought the Max Energy hand held from Hypertech. I know i need to ditch it and go with a real tuner. Im not too sure about tuning he car like that yet, no dyno close to here.

  4. #4
    cutting and welding mark21742's Avatar
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    hugger orange
    2004

    Quote Originally Posted by 13nickels View Post
    bought the Max Energy hand held from Hypertech. I know i need to ditch it and go with a real tuner. Im not too sure about tuning he car like that yet, no dyno close to here.
    well if it makes you feel any better when i first got my car i bought a superchips handheld tunerand its been in the garage on the shelf since i upgraded to hptuners

  5. #5
    T/A is in Bahrain! 13nickels's Avatar
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    yeah, i know i need to do it. id like to sell the hand held and go hptuners. is it software, and would i use my laptop to tune it?

  6. #6
    cutting and welding mark21742's Avatar
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    hugger orange
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    yup, comes with the program on a cd that you download on your laptop and it has a cable with a usb port on one end, odb2 connector on the other and in the middle of it is a little (brain box) that decode and let's you rewire your car computer

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