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This is a discussion on Newb Question within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; So I picked up my 2012 WRX last Friday and I've already clocked about 700 miles :roll eyes: My question ...

  1. #1
    Registered User 2012-WRX-PBP's Avatar
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    Newb Question

    So I picked up my 2012 WRX last Friday and I've already clocked about 700 miles :roll eyes:
    My question is in regards to the exhaust. I've noticed the two outer pipes blackening more so than the two inner pipes. Is this normal?
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    Registered User 11blackwrx's Avatar
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    not sure, i never really checked that when i had my stock exhaust haha
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  4. #3
    Pro Manscaper Mikie13's Avatar
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    I'm willing to bet yes. I've seen it before...but let's think about how the exhaust travels.

    It's heated gas being pushed out of the exhaust system, so it will follow the path of least resistance. In this case, the outer exit is a smoother flow, so more volume of gas will travel that path, as opposed to exiting the inner pipes in which the gas would have to make an even sharper turn. So, the more volume exiting the outer pipes, would naturally have more carbon buildup.
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  5. #4
    Registered User ea126405's Avatar
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    Yes, the exhaust gases will follow the path of least resistance. That's what you are observing. Who'd have thunk that a '12 WRX could be featured in a Science Project.
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  6. #5
    Registered User 2012-WRX-PBP's Avatar
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    thanks! that's exactly what I was thinking. Better to ask, though.

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