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Quick catalytic convertor question

This is a discussion on Quick catalytic convertor question within the External Engine forums, part of the LSx Technical Help Section category; 2001 ws6 m6, my passenger side cat is clogged so I am going to replace both with Carsound high-flow cats, ...

  1. #1
    freshduckie
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    Quick catalytic convertor question

    2001 ws6 m6, my passenger side cat is clogged so I am going to replace both with Carsound high-flow cats, question----on stock application I just need 2.5" in/out and just cut off old one and clamp new one in?

    Thanks

  2. #2
    Senior Member 02z28ls1's Avatar
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    navy blue
    2002 Z-28 Camaro M6

    I've been working in exhaust shops and what we would do there is weld it in-clamps are not considered strong enough in that application.This would involve removing the Y-pipe and cutting the convertors out -putting it back in place-then tacking things back together ,removing again and finish welding.I know this sounds like a lot of hassle but trying to do it any other way will involve more work or less than satisfactory results.Convertors generate alot of heat and welding is the only thing that will keep it together with the amount of vibration also.I would give it a shot if you have moderately good MIG welding skills.Otherwise I would pay someone to do it right.

  3. #3
    Senior Member mrr23's Avatar
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    dark bowling green
    2000 corvette

    here's a free way to do it. the cats are covered for 8y/80k. take it to the dealer.

  4. #4
    freshduckie
    Guest
    Ok yeah weld in you say, I see your point here, so 2.5 in and out is fine right? I would have dealer do it but no codes thrown

    thanks

  5. #5
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    silver
    2000 camaro ss

    how do you know its clogged?

  6. #6
    Senior Member SeVeReDiStOrTiOn's Avatar
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    05 Wrangler
    00 Z28 sold :-(

    How do you weld on the cats with stock manifolds? I just put on some random tech cats and they bolt-on like the factory cats do....welded the y-pipe to the catback though.

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