Having a proper fuel supply is vital to your vehicle's performance and reliability. Get your ride set up with fuel products from the best brands in the industry. Fuel pressure regulators are used to help maintain a proper air to fuel ratio when you boost your car. Maintaining a proper air to fuel ratio is essential to preventing damage to your engine. About Turbosmart: urbosmart is a world leading manufacturer in performance accessories for forced induction vehicles. Turbosmart engineers, builds and track tests all of the products in-house to make sure that they are continually producing the highest quality blowoff valves, wastegates, boost controllers, gauges, pressure regulators, and hoses for both the track and the street.