EFI Electric Fuel Pump

[PLDRIVE]

Lippy
What kills a fuel pump is heat and cavitation. OEM pumps are mounted in the tank to control heat and cavitation. They are designed to provide just enough fuel to get the job done. Fuel pumps mounted outside of the tank (after market) wear out prematurely due heat and cavitation (even Weldon pumps).
Bigger is not better. The Fuel pump should be big enough to handle the job but anything over what is required creates heat and aeration in the fuel.
For longevity and better performance controlling the speed of the pump will keep heat down on the pump as well as the fuel. Aeration will be reduced due to minimal fuel being bypassed back to tank. A poor designed fuel system will kill a fuel pump in a hurry.
Some of the most common mistakes i have seen. 1. Too big of pump. 2 Return fuel dumped right on top of pickup. 3.Too small of supply line to pump (supply line should be larger then output). 4. Pump mounted to high and to far from pickup.