The Perrin PSP-INT-322HP cold air intake delivers 15–30 WHP on the 2008–2014 Subaru WRX and 2008–2015 STI with no ECU tune required. CARB-approved for street legal use in all 50 states, it combines precision CNC mandrel-bent aluminum construction with a Dryflow filter and integrated airflow straightener for consistent, reliable power gains.

Power

Add 15–30 WHP without a tune. Actual gains vary based on installed hardware, tune, and vehicle condition. Additional power is achievable with proper ECU tuning.

No Tune Required

Designed and tested to run safely on stock ECU calibration. If adding a tune, ensure it accounts for all installed modifications.

Precision Construction

CNC mandrel-bent aluminum tubing for consistent fitment. CNC-machined MAF sensor bung ensures perfect sensor alignment — critical for accurate air/fuel ratios and ECU management.

Dryflow Filter

Same filtration protection as an oiled filter with less maintenance, no mess, and no risk of over-oiling. Rigid internal screen protects against debris in dusty or rough conditions.

Airflow Straightener

Forces incoming air into a uniform profile for smooth, predictable MAF sensor readings — the key to consistent horsepower gains.

Sound

Stock-like at cruise, aggressive under load. BOV sound becomes significantly more prominent after installation.

Finish

Textured Hyper Pink powder coat for long-lasting protection and a bold engine bay presence. Also available in Black, Red, and Neon Yellow.

Vehicle Fitment

• 2008–2014 Subaru WRX
• 2008–2015 Subaru WRX STI

Specs

• Part Number: PSP-INT-322HP
• Color: Hyper Pink
• Compliance: CARB-approved (50-state legal)
• Tune Required: No
• Weight: 5 lbs