This is manual turbo boost controller that is specially designed for Subaru WRX to create optimal performance on its application. Manufactured by NSX Motorsports, this product is able to increase speed and performance of turbo vehicle with simple installation process easier than electronic boost controller that can malfunction and very expensive. This manual turbo controller can be installed on any turbo vehicle and can handle up to 30 psi that is spectacular. This product is well designed using high quality material to create greater turbo car performance and gains car’s horsepower per 1psi that is amazing and functional. NSX manual turbo boost controller is ready to unleash the hidden car power with low cost and simple installation which is less than 20 minutes.