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  1. 2004 WRX p0420 error

    2G WRX Chat
    Howdy, I am the crabby, middle aged original owner of an '04 Subaru Impreza WRX sedan. Overall, I've loved this thing even though we're getting to the point where every rattle and squeak costs four figures to deal with. Now it's a p0420 error. And I think there ought to be a law that anything...
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