The upgrade of a fuel pump can be effective in increasing power, especially in high-performance vehicles or those with modified engines. The fuel pump that comes with any particular vehicle is designed to supply the fuel demands of a factory engine, typically operating at 40 to 60 PSI and delivering a flow rate suitable for standard horsepower levels. However, when modified engines are involved, such as a turbocharger or supercharger, or larger injectors, the stock Fuel Pump can barely provide enough fuel to maintain higher horsepower output.
For example, an average factory Fuel Pump would provide approximately 255 liters per hour; this would be normally regarded as adequate for an engine running with up to 500 horsepower. But if your engine is modified to surpass this power level, then going for a high-flow Fuel Pump, like a Walbro 450 LPH, can support up to 700 horsepower or more. With increased fuel flow, you ensure the engine gets the much-required volume of fuel to run efficiently under load, especially when rapid acceleration or high speeds are concerned.
In 2016, a performance enthusiast group upgraded their Ford Mustang GTs to supercharged systems that took the engine past the 600-hp benchmark. The factory Fuel Pumps simply could not keep up with the demand, causing fuel starvation and thus a loss of power. Upgrading the Fuel Pumps to high-flow pumps showed a 20% increase in overall power output for these Mustangs, proving just how key fuel delivery is to performance.
It also takes into consideration support components, such as fuel injectors and fuel pressure regulators. A high-flow Fuel Pump, without proper matching with good injectors, will run the engine rich because of too much fuel flow. Proper tuning in this regard will ensure that the whole fuel system works together in tandem for maximum efficiency and power gain.
As one of the most renowned engine gurus once uttered, “the more horsepower that one desires, the more fuel will be needed to support it.” By upgrading your Fuel Pump, your engine can reach its full potential-being capable of more power without being limited by fuel delivery. More on Fuel Pump upgrade can be found at Fuel Pump.