AEM intakes has once again stepped up to the plate with cold air intake (CAI), number 21-735WR, and produced an amazing estimated +32 HP and +31 TQ at the wheels of an otherwise stock 2015 Subaru WRX STi 2.5L EJ257 engine. It is powdercoated in a wrinkle-red finish and mandrel bent to complement original equipment components.  The AEM cold air intake, available thru Marken Performance, for the 2015 Subaru WRX STi positions the AEM Dryflow Air Filter in a location near the front of the car to help pull fresh air from outside the engine compartment. Bringing in cooler outside air can result in more power. The AEM synthetic Dryflow air filter is designed for low restriction without compromising engine protection. The 21-735WR 2015 Subaru WRX STi cold air intake Dryflow filter is washable and reusable.  An AEM dry filter uses a synthetic filter media and does not require oil allowing for quick, easy cleaning. An application specific powdercoated aluminum heat shield is included in the AEM CAI for the 2015 STi to help prevent engine heat from increasing the inlet air temperature.