Intake Cold Air Red 08-14 WRX/08-15 STI (CARB EO# D-735)PSP INT 322RD OVERVIEW Increase horsepower and style under your hood. PERRIN Intake Systems use proper MAF alignment and plumbing size, both of which are crucial to maintain proper air fuel ratios and prevent check engine lights that plague competitors. CARB Approved! POWER Add 15 30 WHP to your car! Actual horsepower values will vary depending on other installed hardware, tunes, and overall condition of your vehicle. CARB APPROVED California and