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What cat to buy

This is a discussion on What cat to buy within the General Help forums, part of the LSx Technical Help Section category; 2001 ws6 m6 Need a new passenger side cat, but will replace both. I was going to go with carsounds ...

  1. #1
    freshduckie
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    What cat to buy

    2001 ws6 m6

    Need a new passenger side cat, but will replace both. I was going to go with carsounds cats, do I need 2.5" in/out? Will a unversal fit work? Do I just cut them off and weld back on or do I need to do something with the y-pipe, stock exhaust currently.

    Thanks alot

    Doug

  2. #2
    Senior Member mrr23's Avatar
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    dark bowling green
    2000 corvette

    are they factory cats? if so, just take it to the dealer and it's replaced free for 8/80.

  3. #3
    Senior Member 02z28ls1's Avatar
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    navy blue
    2002 Z-28 Camaro M6

    Or if you're out of warranty-I know it would be tough to weld in a universal one in the space given.It would take a good muffler shop to pull that off but nothings impossible.

  4. #4
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    silver
    2000 camaro ss

    why do you need a new cat?

  5. #5
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    Quote Originally Posted by mrr23
    are they factory cats? if so, just take it to the dealer and it's replaced free for 8/80.
    My first thought too - throwing P0430?

  6. #6
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    silver
    2000 camaro ss

    ????? im wondering because i think i may need a new one???? mine was glowing red the other day!!!! think it may be clogged. i am having bad hesitation when at wot as well.

  7. #7
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    Throwing any codes/have stock post cat 02 sensors?

  8. #8
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    silver
    2000 camaro ss

    no codes at all

  9. #9
    freshduckie
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    They are both stock, I don't get any codes thrown, dealer will not fix because no codes. You can hear a rattling sound as well. So can anyone tell me the specs? Will it really be hard to weld in?, how does everyone else do it with new high flow cats?

  10. #10
    Senior Member 02z28ls1's Avatar
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    navy blue
    2002 Z-28 Camaro M6

    If it's rattling that means it breaking up internally.it's just a matter of time until it starts shooting chunks out.It's still not setting codes because there is enough material left to work at cleaning the exhaust.But that won't last long.I would wait until it threw a code if that's what they want-if it's really rattling inside the convertor then it won't take long.

  11. #11
    freshduckie
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    Well is there a way to speed it up maybe, haha. You see my car jerks randomly when driving and I think its linked to the cat chokeing the exhaust. I have looked at other things and myself, friends, and some mechanics come up with that cat.

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