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  1. K&N CAI for speed 3..is this all it takes?

    2010-2013 Mazda 3 Engine and Performance
    http://www.good-win-racing.com/miata/images/items/69-6012TS.jpg to me that looks like a relatively simple (almost too simple) design for the hot air to be kept away from the intake. like when you used to sit at a restaurant where smoking and non-smoking sections were 'divided' by a 5 foot wall...