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fuel economy

  1. What to do first?

    Focus ST Performance
    Trying to figure out what the important things to do are. My 2013 Focus ST has a Steeda FMIC, short-shifter, 3" MBRP cat-back exhaust, high performance air filter, and the Steeda sound symposer delete. In my research I see that a lot of people are replacing the rear motor mount, I assume this is...
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