With a great look and the performance that goes with it, the Mazdaspeed Protégé is a compact sports car ideal for enthusiasts. Forge Motorsport has made a dump valve that makes this car even more reliable and efficient. The MSP01 kit is based on a unique two-piston design that replaces the stock dump valve. The "Stage 2" design allows the car to run normally without stalling, idling or engine lights. Under pressure, the valve produces a crystal clear sound that will get you noticed. In addition to this beautiful noise, the MSP01 kit has a great look. Made of aluminum, the MSP01 is fully adjustable and maintainable to suit your setup as you make changes. Installation is easy and takes less than 10 minutes. The MSP01 comes with the Forge Lifetime Warranty, and is available in two different finishes. All Forge Motorsport Dual Piston Naturally Aspirated Dump Valves have been designed to remove 100% of the residual compressed air that remains in the intake system at throttle closure. We do our best to allow compatibility of this product on vehicles equipped with flow meters, but we cannot guarantee that all configurations will be compatible with an atmospheric dump valve. Forge Motorsport and its distributors disclaim any liability for any damage caused by the installation of this dump valve on a vehicle whose programming, original or modified, would not be able to adjust the air measurement with an atmospheric dump valve such as this one.