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  1. 3rd Generation Optima (2011 - 2015)
    I just could see ZERO benefit in this HPS thing. I bought the heat shield too...but the intake pipe is a thin pipe of stainless that goes under the heat shield into the hot zone behind the engine. Raises air Temps to 131° (measured today @ local Kia dealer). There is carbon and soot all up and...
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