WRX uppipe, downpipe, exhaust questions. - Page 3
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This is a discussion on WRX uppipe, downpipe, exhaust questions. within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; The Cobb dp is meant to be used with stock catback? I just dont want to go from say a ...

  1. #31
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    The Cobb dp is meant to be used with stock catback?

    I just dont want to go from say a ~3" dp to a ~2.5" catback and it leak or mess up flow due to the size difference.

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  3. #32
    Subaru Newb MainFrame's Avatar
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    Quote Originally Posted by 05WagonRX View Post
    The Cobb dp is meant to be used with stock catback?

    I just dont want to go from say a ~3" dp to a ~2.5" catback and it leak or mess up flow due to the size difference.


    Then just buy a full TBE, one that is 3" all the way back.

  4. #33
    Registered User frenziedcage's Avatar
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    Quote Originally Posted by MainFrame View Post
    Then just buy a full TBE, one that is 3" all the way back.
    +1

    Also 3" all the way back is better imo less back pressure.

  5. #34
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    I do not wish to have a full catback due to sound, which is why I am looking for a dp that connects and works well with the stock catback.

  6. #35
    Registered User UEDan's Avatar
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    Grimmspeed downpipe adapter.
    The stock catback is not restrictive.
    Done and done.
    ^Route I'm going.
    Last edited by UEDan; 04-30-2013 at 12:13 AM.

  7. #36
    and the Funky Bunch Calvinball's Avatar
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    Quote Originally Posted by 05WagonRX View Post
    The Cobb dp is meant to be used with stock catback?

    I just dont want to go from say a ~3" dp to a ~2.5" catback and it leak or mess up flow due to the size difference.
    From their website:
    The end flange uses the stock donut gasket and factory spring bolts to aid in flex, longevity and proper fitment. This provides an improved seal compared to other methods, as well as reduced noise. An additional benefit is that it makes the COBB 3" Downpipe compatible with any cat-back exhaust that mates to the factory cat section.
    Quote Originally Posted by UEDan View Post
    Grimmspeed downpipe adapter.
    The stock catback is not restrictive.
    Done and done.
    ^Route I'm going.
    But there is this as well.
    - Will
    First Mods: What to do and what not to do
    Current Car: 2014 Golf TDI
    Previous Cars:2012 WRB WRX Hatch, 2004 RSX-S, 1998 Grand Prix GTP
    "Isn't it amazing how smart you feel when you just aren't being stupid?"

  8. #37
    Subaru Newb MainFrame's Avatar
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    Quote Originally Posted by 05WagonRX View Post
    I just dont want to go from say a ~3" dp to a ~2.5" catback..
    Quote Originally Posted by 05WagonRX View Post
    I do not wish to have a full catback..


    Well make up your damn mind, lol. Either you do or you don't. Pick one and go with it.

  9. #38
    Master Baiter EJ257's Avatar
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    Quote Originally Posted by EJ257
    An aftermarket uppipe will probably be better due to design. Turn in Concepts made a thread on IWSTI about it. I'll look tonight when I'm off my phone. You wouldn't notice a difference on your stock turbo and/or without custom tuning.
    As I searched for this thread again, I came across this post and realized I never updated it. Here's the link I referred to:
    Stock Up-pipe - a more serious look - Subaru Impreza WRX STI Forums: IWSTI.com

    Sorry for the delay...
    2005 WRX STi (Mods | Virtual Dyno)

    Resident Tuner @ WTF Tuning, LLC

    "Never trust anything that bleeds for a week and lives ..."

    UNYSOC

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