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The Injen SP cold air intake in wrinkle red for 2004–2007 Subaru Impreza WRX/STI employs patented MR tuning, 6061-T6 aluminum tubing and a SuperNano-Web dry filter to improve airflow while maintaining safe A/F ratios. The complete kit is dyno-proven for gains of roughly up to 26 hp and 23 lb-ft. of torque, delivers a more aggressive induction note, and requires no additional tuning with a limited lifetime warranty.
Injen 04-07 STi / 06-07 WRX 2.5L Wrinkle Red Cold Air Intake
