The most common failure of high flow fuel systems is cavitation, or “vapor-lock”. The combination of too much heat or too much inlet restriction can create this operating condition, where the liquid fuel literally vaporizes (boils) inside the pump assembly. However, this can be avoided.
Changing the fuel pressure on an EFI System is an effective method of affecting engine performance and making more power. However, there are many do’s and don’ts, and rules of thumb that can be frustrating to learn the hard way. Below are many small, but key points, tips and insights all engine tuners should to