2018-2021 Subaru WRX STI Neon Yellow Cold Air Intake by Perrin

Increase horsepower and style under your hood. The PERRIN Cold Air Intake (CAI) system uses proper MAF alignment and tubing size, which are crucial for maintaining safe air-fuel ratios and preventing knock and check engine lights that plague competitors.

Power - Add 15-30 WHP to your car! Actual horsepower values will vary depending on other installed hardware, tunes, and the overall condition of your vehicle.

No Tuning Required - This part is designed and tested to work safely on your stock vehicle (aftermarket catback and intercooler are also ok) without any ECU recalibrating required. If any other parts are installed beyond these listed, or you are using any Cobb AccesssPORT Off-The-Shelf (OTS) tunes, a custom ECU calibration specifically for our intake is REQUIRED.

Precision Construction - Our intakes are constructed from aluminum tubing, which is precision CNC mandrel bent, for consistent and perfectly fitting parts. Our MAF sensor bung is CNC machined for perfect fit and alignment of MAF sensor to intake. This is crucial for proper air fuel ratios and ECU engine management.

Filter Tech - Dryflow filters provide the same level of protection as an oiled filter, but require less maintenance, are less of a mess, and have no risk of over-oiling. The rigid screen inside and around the filter media helps prevent damage from debris and is ideal for dusty and rough driving conditions.

Air Straightener - The airflow straightener improves MAF readings by forcing incoming airflow into a uniform profile. Smooth and predictable airflow is the key to good, consistent MAF sensor readings for reliable horsepower gains.

Sound - During normal driving, the PERRIN intake sounds relatively stock. However, under load it really comes to life, unlocking the sound of your turbo flat-4. Once installed, the sound of your blowoff valve will be much more prominent, demanding attention and alerting people that your car is undeniably modified.