Hybrid Racing Unibody Fuel Pressure Regulator (K-Swap & Universal)The fuel pressure regulator is often overlooked, but a very critical component in a vehicles fuel system. Without a reliable and consistent fuel pressure, your ECU has no way of knowing how much fuel it is injecting into each cylinder. Most conventional fuel pressure regulators use a bladder type design. Although the bladder type design is cost effective and reacts to disturbances quickly, those bladders often lead to significant pressure