EVIL ENERGY 12V EFI External Inline Fuel Pump — 300 LPH High-Flow, 75 PSI Max

EVIL ENERGY's external inline fuel pump is a high-flow 12V EFI pump rated up to 300 LPH (at 43 PSI & 13.5 V) designed to deliver steady fuel pressure for performance street and race applications.

This compact inline pump is engineered for electronic fuel injection (EFI) systems running on a 12V electrical supply. Tested flow specifications include 200 LPH at 75 PSI (12V), 255 LPH at 43 PSI (12V), and up to 300 LPH at 43 PSI when powered at 13.5 V; its maximum operating pressure is listed at 75 PSI. Built to work with gasoline, pump gas, race fuels and diesel, the unit covers a broad range of uses while tolerating a wide temperature span from -68°F to 194°F. The package contains hardware and adapters to simplify installation and mounting when positioned below the fuel tank as recommended.

How much flow and pressure can I expect from this pump?

The EVIL ENERGY pump provides specific measured outputs depending on system pressure and supply voltage. It reaches 200 LPH when tested at 75 PSI using 12V, 255 LPH at 43 PSI with 12V, and approximately 300 LPH at 43 PSI when the pump sees 13.5 V. Maximum rated operating pressure is 75 PSI, which is suitable for many high-performance EFI setups.

• 200 LPH at 75 PSI (12V)
• 255 LPH at 43 PSI (12V)
• 300 LPH at 43 PSI (13.5 V)
• Maximum operating pressure: 75 PSI

Will this pump work with my fuel type and environment?

This inline pump accepts a wide range of common fuels used in motorsports and daily driving, including gasoline and diesel. Its operating temperature tolerance spans extreme cold to high heat, making it usable in varied climates and racing conditions. As always, confirm compatibility with your vehicle's fuel lines and EFI system before installation.

• Compatible fuels: gasoline, pump gas, race gas, diesel
• Operating temperature: -68°F to 194°F
• Designed for 12V DC EFI systems only
• Suitable for under-tank installation to maintain gravity feed

How is the pump installed and what comes in the box?

The pump is intended for inline mounting, preferably below the fuel tank to keep a gravity-fed supply; a detailed manual is included to guide wiring and plumbing. The kit supplies mounting hardware, electrical terminals and AN fittings so you can match common hose and line sizes. Follow safe electrical and fuel-handling practices during installation.

• Included: fuel pump, mounting bracket, gaskets, washer, nuts
• Electrical: 2 insulated terminals provided
• Plumbing: 10AN inlet adapter and 6AN outlet adapter included
• Extras: 2 rubber connection covers and user manual

How should I size this pump for my vehicle?

Select this 300LPH-class pump when your engine and injector flow demand falls within its output range at your system pressure. Check your engine's horsepower, injector flow rates, and desired fuel pressure; compare required LPH to the pump's tested outputs. If you plan for power upgrades, allow headroom for increased fuel demand or consider staged fueling strategies.

• Use manufacturer injector and horsepower charts to calculate LPH needs
• Account for pressure drop across filters and rails
• Plan for future upgrades by choosing modest extra capacity

Who is this for: The EVIL ENERGY external inline fuel pump suits tuners, track-day enthusiasts and performance street builders who need a reliable 12V EFI pump with mid-to-high flow capability. It's a practical option for projects that require multi-fuel compatibility, a compact inline package, and a kit that includes mounting and adapter hardware for a straightforward installation. Not intended for non-EFI or non-12V systems; verify electrical and plumbing compatibility before purchase.