This fuel pressure regulator is for tuning cars, be used with a larger fuel pump and injectors. This fuel pressure regulator was designed to be used with a larger fuel pump and injectors to provide correct fuel pressure flow that is required when tuning engines.Accessories included:2 fitting, AN6 1/8NPT. 2 hose nipple, #8 straight 1/8NPT. Fuel pressure regulator for tuning engines