Increase HP and TQ on your 2022-2024 WRX with a PERRIN Equal Length Header. With larger primary and secondary tubes, you can expect 5WHP on Stage 1 cars and far more on 350+ WHP cars without sacrificing turbo response. Power Testing on an aggressive Stage 1 Tuned 2022 WRX with typical bolt-ons installed adds 5-10 WHP at the upper RPMS and even more on cars pushing past 350 WHP! Racecar Quality Expansion Joints Perrin headers use high-quality expansion joints with thermal liners to protect them from extreme heat and stand out from others on the market. Heat Management Perrin Headers are designed to fit seamlessly under the OEM heat shield. Retaining the OEM heat shield is crucial for maintaining proper oil temperature and ensuring constant power delivery. Design The Perrin primaries and secondaries are about 14% larger than the stock header, producing smooth and balanced exhaust flow from the heads to the turbo without sacrificing bottom-end power. Finish Perrin Equal Length Header for 2022+ WRX features a brushed stainless steel finish. No Tuning Required This part is designed and tested to work safely on your vehicle without any ECU recalibrating required. Also, this header has been thoroughly tested to be safe on all COBB AccessPort Off-the-Shelf (OTS) calibrations/tunes. If you are/will be using a custom ECU calibration provided by a custom tuner, seek their advice if this header is safe to use with their calibration.
