Adjustable Fuel Injector Pump Requires use of F.I. rated fuel bottle or equivalent bottle with built-in fuel return feature and 5/16* F.I. high-pressure fuel line (5/16* high-pressure fuel line for use with fuel injection applications), Easily adjustable fuel pressure from 0-150 psi and is regulated through easy-to-understand controls, Controllable fuel supply for servicing fuel-injected models, Large dial gauge displays fuel pressure on front