3.4L (5VZ-FE) Conversion High Pressure Fuel Hose - Tech ... 3.4L (5VZ-FE) Conversion High Pressure Fuel Hose. Categories: Installation Documents-> Engine. Installation notes For 3VZ-E and 22R-E models. Note: The original 22R-E or 3.0L fuel pump (in-tank) normally works well with the 3.4l engine and can be left in place. However, if a supercharger is used, ORS recommends upgrading to a performance fuel pump.