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all the aftermarket intakes like k&n, injen, HPS ,ect. are mainly for sound. Most people here are getting the F-sport intake or Joe Z pipe w/drop in filter as those seem like the best design for the 2IS. You shouldn't get any CEL with any of those intakes unless its an install error.
hps intake? lol.. what information does hps have? NOTHING.. no website, no information... it's just a copy of another brand's intake like the one you see on ebay.. just a pipe but with hps name..