Scion FRS cold air intakes are the easiest and most straight forward modification you can do to add power to your car. Sometimes producing up to a two-digit increase in horsepower, and bumping up gas milage due to increased engine efficiency. With the Scion FRS cold air intakes that PRO Import Tuners offers, you will also be getting a quality product that will take into account all aspects of engine performance and driveability. Often times, they will help correct or improve on the factory air-fuel ratio calibrations to extract even better performance from your Scion FRS.