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Thread: catcon

  1. #1

    Default catcon

    Sorry, I am new here so I don't know if this is in the right section. My catalytic converters are all clogged up and keep throwing codes. My question is...if I replace them with straight pipes, will it still throw codes? I am not worried about emissions too much.
    1998 Chevy Suburban - 35x12.50

  2. #2
    Jr. Mechanic
    Join Date
    Sep 2007
    Location
    Los Angeles, CA
    Posts
    116

    Default

    On a 98, yes, it will. On OBD II systems, which is everything post 1996, there is a second O2 sensor that monitors the cat. If you Replace the cat, the codes might stop. Depending which codes are you getting!
    Now if you get a bypass for the post cat O2,.....
    '88 Jimmy 4X4
    5.3l L59/ 4L60E Tuned by Tad
    4" Lift 33" BFG. Custom Brush Guard, KCs, outside spare, Oil pan guard etc.

  3. #3

    Default

    Quote Originally Posted by Toymyster View Post
    On a 98, yes, it will. On OBD II systems, which is everything post 1996, there is a second O2 sensor that monitors the cat. If you Replace the cat, the codes might stop. Depending which codes are you getting!
    Now if you get a bypass for the post cat O2,.....
    I forget the exact code but I know it had something to do with a clogged cat. How could I bypass the 2nd o2?
    1998 Chevy Suburban - 35x12.50

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