High performance fuel pumps are a low cost wear item used in a very demanding environment. Do not expect them to last as long as a typical Original Equipment (OE) pump. With proper setup, use, and maintenance, your high performance pumps may last for years, but in most cases we recommend high performance fuel pumps (and prefilters) be replaced on a regular basis. Alternatively, certain conditions can quickly destroy your fuel pumps.
It is also worth mentioning that the manufacturer of the fuel pumps used in our system does not have any warranty on these pumps, which should tell you something about the expectations of pump life.
Generally speaking, we recommend that all high-performance electric fuel pumps and prefilters (socks) be replaced every two years. (1-1.5 years in E85) If the prefilter sock(s) are black or dark gray, this indicates excessive brush and commutator wear in the fuel pumps. Pump performance is normally degraded when the prefilter sock is dark colored. These brush and commutator particles also restrict the inline (external, fine) filter as well. The fuel should be drained and properly disposed before installing new fuel pump(s).
If a fuel pump has to be replaced prematurely and has dark gray prefilters, the remaining fuel in the tank is contaminated and should be disposed of immediately. Clean the tank if necessary and refill with fresh fuel before installing new fuel pump(s).
Furthermore, if you ever accidentally run the fuel pump(s) dry, we recommend immediate pump replacement.
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