Question about downpipes
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This is a discussion on Question about downpipes within the New England States forums, part of the Regional Discussion category; I'm debating on going stage 2 this spring, and would like to use the Cobb stage 2 OTS mapping until ...

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    Question about downpipes

    I'm debating on going stage 2 this spring, and would like to use the Cobb stage 2 OTS mapping until a later time when I can get a custom tune. My question is, do i have to use the Cobb downpipe or can I use an equivalent from another manufacturer? I know target boost will already be an issue with running only the downpipe but I was curious if I could save a little money for the tune
    2012 WRX Hatch #41
    Perrin F/R Endlinks
    Cobb Rear Sway Bar
    Cobb Front Strut Brace
    Cobb AP - Stage 1
    Stoptech Street Performance Pads

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    MAINEiac 11blackSTi's Avatar
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    Any high flow catted down pipe will work.

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    So any of these options will work? Downpipes and Y Pipes at RallySportDirect.com
    And do any aside from the Cobb DP require a new heat shield or butchering the original?
    2012 WRX Hatch #41
    Perrin F/R Endlinks
    Cobb Rear Sway Bar
    Cobb Front Strut Brace
    Cobb AP - Stage 1
    Stoptech Street Performance Pads

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    The Guy On The Couch TownLine500's Avatar
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    Any aftermarket Down pipe, you will need to modify or replace the heatshield.
    Also when removing heatshield to install DP don't loose the heatshield brakes, you'll need them.
    I run a catted Cobb DP myself and I love it. The Cobb DP works with the Cobb AP.
    I have the Grimmspeed heatshield.
    As far as the cat back, you can use pretty mutch any one.


    How do you like your strut bar?
    Can you feel the added stiffness?
    You are definitely on the right path my friend.
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    Registered User unseen's Avatar
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    a down pipe is within the next few mods ill be making and something i considered was which one, depending on whether i get a catback or not. initially, i did not consider a catback, so cobb was an option (though i really wanted a grimmspeed). there is the adapter, but just something about simple mating of part to part put me at ease.

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    MAINEiac 11blackSTi's Avatar
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    Quote Originally Posted by WRX97 View Post
    So any of these options will work? Downpipes and Y Pipes at RallySportDirect.com
    And do any aside from the Cobb DP require a new heat shield or butchering the original?
    All of them will work yes. You need to get a catted down pipe though if you are going to use the cobb ots tune. They have map notes that specify that. If you go catless you will need to get a pro-tune (and still run the risk of getting boost creep - unless you do an external waste gate set up).

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    Quote Originally Posted by 11blackSTi View Post
    All of them will work yes. You need to get a catted down pipe though if you are going to use the cobb ots tune. They have map notes that specify that. If you go catless you will need to get a pro-tune (and still run the risk of getting boost creep - unless you do an external waste gate set up).
    I plan on going catted with the factory cat-back (for noise's sake), so I'm thinking maybe go with the Cobb DP and Grimmspeed heatshield?
    The Grimmspeed DP seemed to be the better option except I would need the adapter too.
    2012 WRX Hatch #41
    Perrin F/R Endlinks
    Cobb Rear Sway Bar
    Cobb Front Strut Brace
    Cobb AP - Stage 1
    Stoptech Street Performance Pads

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    Quote Originally Posted by TownLine500 View Post
    How do you like your strut bar?
    Can you feel the added stiffness?
    You are definitely on the right path my friend.
    The strut bar is really only noticeable when driving the car hard (Auto-X, time trial, etc), but it stiffens the front nicely. Coupled with a rear sway bar (set to hardest setting) and endlinks, gives the car a nice oversteer setup
    2012 WRX Hatch #41
    Perrin F/R Endlinks
    Cobb Rear Sway Bar
    Cobb Front Strut Brace
    Cobb AP - Stage 1
    Stoptech Street Performance Pads

  10. #9
    Registered User unseen's Avatar
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    Quote Originally Posted by WRX97 View Post
    Quote Originally Posted by 11blackSTi View Post
    All of them will work yes. You need to get a catted down pipe though if you are going to use the cobb ots tune. They have map notes that specify that. If you go catless you will need to get a pro-tune (and still run the risk of getting boost creep - unless you do an external waste gate set up).
    I plan on going catted with the factory cat-back (for noise's sake), so I'm thinking maybe go with the Cobb DP and Grimmspeed heatshield?
    The Grimmspeed DP seemed to be the better option except I would need the adapter too.
    Yeah the grimmspeed ceramic coated downpipe is hella sexy. Nonetheless, my biggest concern is that a pipe have the 2nd o2 bung for wideband.

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