Fuel pump flow rate optimization refers to the steps taken to optimize the components and/or conditions that optimize fuel delivery. A high flow fuel pump (typically capable of delivering more than 250 liters per hour (LPH) of fuel), is an upgrade to produce additional volume, which is essential for high performance (or turbo) engines which require more than a standard flow rate of fuel. The high-flow pumps provide the extended delivery at higher pressures needed for consistent combustion at higher RPMs and load.
Maintaining a clean fuel filter is a huge help when it comes to flow rate, a dirty fuel filter can restrict the path of the fuel resulting in an increase in pressure on the pump. By replacing the filters every 30,000 miles, this keeps the flow free flowing and will help increase the pump life by 25% as it does not have to work as hard. Take note, though, that mechanics often recommend premium high-performance filters with larger surface areas for modified motors as these need no readjustments because it provides for improved flow of fuel without sacrificing the quality of filtration!
Another method for increasing flow rate is by loosening restrictions in fuel lines. In cars that need a higher flow, switching to wider fuel lines, usually 8mm or 10mm, reduces resistance preventing the fuel from moving through the pump, which lets the pump move fuel smoother. Durability is increased by using materials such as braided stainless steel found in aftermarket fuel lines, and friction on the internal walls helps ensure that flow is steady at high pressures.
Another variable affecting pump performance is electrical efficiency, as a fuel pump will deliver a specific flow only when supplied with a constant voltage—typically somewhere in the range of 12–14 volts. Pump output loss Voltage drops are a common problem, the output slowly turning into low voltage due to worn wiring or corroded connections. By performing regular electrical inspections, you can ensure a stable power supply for maximizing flow rate via pump functioning on its full capacity. Industry insiders claim well maintained wiring can net up to a 10% efficiency gain from the pump and lowers the chances of fuel starvation under load.
For those drivers who are looking to achieve high performance, investing in a quality Fuel Pump that meets the specifications of a vehicle is essential to ensure that there will always be a constant and improved flow rate to help the engine and also get rid of any fuel delivery issues.