The fuel pressure regulator is used to conduct engine modifications and fuel adjustments, without affecting overall vehicle performance, to improve the engine performance ratings. If you install a new engine modification, the fuel pressure regulator is needed for maintain normal fuel pressure since the new installed engine pump works more efficiently and fast. The size and shape of the fuel pressure regulator have to match on the fuel pump. In spite of the changes in the fuel amount or the changes in speed of the pump, the fuel pressure regulator acts like a buffer in keeping the fuel pump's function, and that is the significance of the fuel pressure regulator. What's more, the condition of the fuel pressure regulator is closely related to the money in your pocket. A good performance fuel pressure regulator reduces remissions during the deceleration, leading to a fuel saving. Make sure you have a top shape fuel pressure regulator. Welcome to shop Subaru genuine OEM products here with a discounted price.