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Thread: Exhaust pipe diameter question

  1. #1

    Default Exhaust pipe diameter question

    Hi guys
    I am thinking of replacing my downpipe to catless downpipe (God help me from what I ve read from others who have tried it).
    Can someone please tell me whats the OD/ID of the stock pipe? 2.25" or 2.75"? The downpipe that I will buy its 3" so I will need a reducer/adapter.
    Thanks

  2. #2

    Default

    Quote Originally Posted by jnin View Post
    Hi guys
    I am thinking of replacing my downpipe to catless downpipe (God help me from what I ve read from others who have tried it).
    Can someone please tell me whats the OD/ID of the stock pipe? 2.25" or 2.75"? The downpipe that I will buy its 3" so I will need a reducer/adapter.
    Thanks
    Most aftermarket downpipes (ATP, COBB, etc) have flanges / gaskets that allow them to match the stock exhaust. If in doubt email the producer or the seller.

    I went through the same thing with my DP: http://www.ozmpsclub.com/forum/intak...-mid-pipe.html
    Last edited by DAN MPS 3; 12-03-2014 at 01:49 PM.
    SG9 XT: VF34 P20, Tomei headers, STI intercooler HSD coilovers, Brembos and much more...

  3. #3

    Default

    What car? What downpipe? Most downpipes are stock flanged and will bolt to the stock catback exhaust.
    Gen 2 is 2.5" to the muffler.


    Sent from my evil apple using Tapatalk

  4. #4

    Default

    Quote Originally Posted by Lachlan View Post
    What car? What downpipe? Most downpipes are stock flanged and will bolt to the stock catback exhaust.
    Gen 2 is 2.5" to the muffler.


    Sent from my evil apple using Tapatalk
    Sorry mate Mazda 6 MPS. I will go with the M2 performance downpipe from Ultrarev

  5. #5

    Default

    Quote Originally Posted by jnin View Post
    Sorry mate Mazda 6 MPS. I will go with the M2 performance downpipe from Ultrarev
    Catless? You welding a cat in?


    Sent from my evil apple using Tapatalk

  6. #6

    Default

    I will leave it catless
    Last edited by jnin; 12-03-2014 at 11:43 PM.

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