Note: The original 22R-E or 3VZ-E fuel pump (in-tank) normally works well with the 5VZ engine and can be left in place. However, if forced induction is used, we recommend upgrading to a performance fuel pump. Trucks or 4Runners originally equipped with fuel injection have a fuel pump mounted inside the fuel tank and a high-pressure fuel line from the tank to the engine bay area.
Carbureted vehicles do not have a high-pressure system in place. In this case, we recommend installing a fuel tank and hard line from a similar-vintage vehicle that had the 22R-E or 3VZ-E. When not using a Toyota tank w/ internal fuel pump, we recommend installing a high-pressure fuel pump in the existing fuel tank/fuel cell. The fuel cools the fuel pump during operation, helping it last longer. Additionally, in-tank fuel pumps nearly eliminate the risk of ‘vapor lock’ in the fuel system. If an external (in-line) fuel pump is used, we recommend mounting it as close to the tank as possible and as low as safely possible.