stock exhaust question
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This is a discussion on stock exhaust question within the STi Technical Forum forums, part of the Tech & Modifying & General Repairs category; is the stock STI muffler 3inch inside or ?...

  1. #1
    Banned C89ZX7R's Avatar
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    stock exhaust question

    is the stock STI muffler 3inch inside or ?

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  3. #2
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    sti exhaust is 2.5 inch

  4. #3
    Banned C89ZX7R's Avatar
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    i know , but was wondering whats the inside dia of the muffler

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