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   K&N Air Intake # 69-3539TB, via Marken Performance, fits 2016-2017 Ford Focus RS 2.3L Turbo models. Chassis dyno yielded an increase from 224.46 horsepower to 258.47 horsepower, as measured at the drive wheels (+33HP, +31TQ).  The 69-3539TB air intake comes with a black rubber topped K&N high-flow air filter and a heat shield that installs using the factory mounting locations. A molded scoop funnels cold outside air toward the filter. Air is then directed through the mandrel bent intake tube into the engine’s throttle body for a guaranteed power gain.  The intake tube is powder-coated blue finish that matches the Focus RS badging and includes a fitting for the factory air pressure sensor.

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