Perrin Diverter Valve Red 2022-2024 WRX / 2019-2023 Ascent / 2020-2023 Legacy XT / 2020-2023 Outback XT

The install was very simple, my car’s response is way better than with the factory bypass valve. I suggest getting a syringe that you would use to bleed brakes to hold vacuum. Mouth with just hurt your tongue.

I have a tune with most of the bolt on upgrades it works fine when daily driving and when you drive more aggressively it releases and you hear a small swoosh. Works as intended and more fail proof than an electronic in my opinion. Make sure to use silicone sliding the hose connections and the T connector is pointed up behind the alternator or you will break the fitting after it’s installed.

After a relatively involved (but still easy) install, I notice an immediate improvement in driveability. Even my wife noticed a much smoother acceleration. Even though this is a recirculating diverter valve, we still hear the classic pshh sound sometimes, although a bit quieter.

Installation had a lot of steps but was actually not too hard. Honestly the hardest part was putting the skid plate back on under the car, but I have the metal skid plate accessory so it was an extra step for me. Otherwise this is something anyone can do. I found it easier to remove the PCV hose going into the turbo inlet as well as the rubber intake hose, but I didn't remove the turbo inlet like they suggest you might be able to for easier install. If you don't remove it, you'll just need a long T30 screwdriver or bit to reach the stock valve.

Very easy and straightforward install, plus a nice sound to it. Just make sure you start out with the shorter spring first unless you are aggressively tuned. If you are running dmann tune with intake I suggest the shorter spring, the car responds much better.

Give the car a more pronounced turbo sound and car has a better feel when accelerating, then letting off. Most challenging part of install was getting hose fitting on.