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Thread: How long do flowmaster mufflers last?

  1. #1

    How long do flowmaster mufflers last?

    A guy gave me a flowmaster muffler off a Z-28. (I'm having a z-28 cat-back installed soon) its got some rust on the edges.. and some on the inside. he said it'd be fine.. should I go ahead and put it on, or just put on the Z-28 muffler that came with the cat-back?
    2001 Galaxy Silver GTP Special Edition

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  3. #2
    As long as it isn't rusted through it should be fine. Are you sure it isn't just oxidation? That is what is on the inside of my exhaust pipes and appeared almost immediately.

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