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Exhaust system diameter

This is a discussion on Exhaust system diameter within the GTO forums, part of the Vehicle Specific category; I've got a borla dual exhaust. Looking to change things up a bit... Is the daimeter 2.25 or 2.5 inches?...

  1. #1
    Member The Silver Goat's Avatar
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    Qucik Silver Metalic
    2004 GTO - M6

    Exhaust system diameter

    I've got a borla dual exhaust.
    Looking to change things up a bit...

    Is the daimeter 2.25 or 2.5 inches?
    Last edited by The Silver Goat; 07-05-2009 at 12:48 PM.

  2. #2
    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
    2004 GTO M6

    04s had 2.25 after the mufflers stock.

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