The Injen SP cold air intake for 2008–2013 Subaru Impreza WRX/STI 2.5L turbo helps the engine breathe deeper to deliver measurable power gains and a more aggressive intake tone. Constructed with 6061-T6 aluminum tubing and a serviceable SuperNano-Web dry filter, it is pressure-tuned for safe A/F ratios, offers dyno-proven gains and includes a custom heat shield and a limited lifetime warranty.
Injen 08-13 Subaru WRX/STi 2.5L (t) Wrinkle Red Cold Air Intake