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Mac cats...why???

This is a discussion on Mac cats...why??? within the External Engine forums, part of the LSx Technical Help Section category; I want to know why mac cats are so bad. Everybody says they are but never why. Do they not ...

  1. #1
    Junior Member
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    1999 camaro z28

    Mac cats...why???

    I want to know why mac cats are so bad. Everybody says they are but never why. Do they not flow, do they break? I want to get a catted y-pipe since im in california. I want the mac because it's cheap.

  2. #2
    Member adham's Avatar
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    Navy Blue Metallic
    2000 Pontiac Trans Am

    i've tried 2 sets and they are BAD
    they are bad because they break from the insides
    they rattle like hell when they r broken
    and the pieces that are broken from the inside travel through your exhaust and get stuck in your muffler FOR GOOD! (then the muffler begins to rattle)
    that is y they r bad

  3. #3
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    Okay thanks
    Last edited by 78lincoln; 07-03-2006 at 08:19 PM.

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