Is this the only pump you need to run stock efi, or do you have to use a high volume low pressure pump to pull the fuel out of the tank to supply this one? I have done one other efi swap before and had to use two pumps, one to draw the fuel out of the tank and one to supply the high pressure to the fuel rail.

Question

WH Tech Support · Accepted Answer

With this pump mounted as close to the tank as possible, this should be the only pump you need to run your EFI. If you have some other setup like a fuel accumulator, you would run a low pressure first to feed, and then the high pressure pump to get the pressure needed to feed the EFI system.