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  1. The simplest factory intake mod with results

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    Firstly, I have an AEM high flow filter that I would recommend to everyone. It's miles ahead of the K&N oiled filters of the 90s. Second, if you remove the top portion of the filter box, first from the throttle body and then from the lower portion where the filter rests, then remove the air...