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best way to fix the cats

This is a discussion on best way to fix the cats within the General Help forums, part of the LSx Technical Help Section category; Well my 2000 ss M6 hit 82k. Now started to get codes P0172, P0175 and P0430. I had this happen ...

  1. #1
    Junior Member
    Join Date
    Nov 2005

    2000 SS M6

    best way to fix the cats

    Well my 2000 ss M6 hit 82k. Now started to get codes P0172, P0175 and P0430. I had this happen about a year ago and finally traced it to a vacum leak in the cheap hose bewteen the PCV and throttle body. 5 cent hose fixed it.

    Now the codes are back and I d'ont hear a vacume leak. Doubt both O2s would go out together. I did run a tank of Tecktron fuel injector cleaner and the codes showed up at the end of the tank??

    If I can't clear the codes what is the best way to gut the cats and maybe but in a basic nitrus system. Is it hard for a very basic system? Car is totally stock and runs 22-24mpg so can't be too rich. Best track time a couple months ago was 13.999 with stock car and "touring commuting tires"

    Now it is getting a little older I think I need to take it up a knotch. Can $600 do it if I do the work myself?

    Jim in Mi

  2. #2
    Member jmhvenom's Avatar
    Join Date
    Oct 2005
    Cincinnati, OH

    2002 Z28

    600 would get you Pacesetter headwers and off road ypipe... no more cats.

  3. #3
    Senior Member ninobrn99's Avatar
    Join Date
    Aug 2003
    Honolulu HI

    all bore 370 Trans Am

    true or you can find a ypipe from a stocker cheap and use that as your replacement, but id go for the LTs

  4. #4
    Veteran 0rion's Avatar
    Join Date
    Aug 2005

    98 Formula
    06 duramax

    I would doubt your cats have anything to do with rich codes. I would assume you have something else going on there. Is the car missing at all? Any mods?

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