EVIL ENERGY External Inline Fuel Pump 300LPH High Flow - 12V Reliable

In this review the EVIL ENERGY External Inline Fuel Pump is assessed for owners needing a high-flow, inline solution for 12V electric injection systems; the bottom line is that it delivers robust flow capacity and solid build quality for performance and replacement applications, while requiring attention to fittings and installation location. The pump is best for users who need up to 300 LPH at higher voltages and compatibility with a range of fuels, and the review focuses on real-world fit, flow figures, and practical installation guidance.

Key Features

• 12V Compatibility: Designed specifically for 12V DC electric injection systems so it fits common automotive electrical setups without modification.
• High Flow Performance: Measured test flows reach up to 300 LPH at 43 PSI and 13.5V, giving extra headroom for engines that need increased fuel volume under load.
• Wide Fuel Compatibility: Works with gasoline, pump gas, race gas, diesel, E85 and alcohol/ethanol, making it versatile for different builds and fuel choices.
• Temperature Rating: Operates across a broad temperature range from -68 F to 194 F, so it remains functional in extreme climates and under heavy use.
• Recommended Installation: Intended to be mounted below the fuel tank so fuel is gravity-fed, which simplifies priming and reduces pump strain.

Who It's For

The pump is aimed at DIY mechanics, track-day enthusiasts, and anyone replacing a failing inline pump who needs a compact unit with up to 300 LPH flow for performance or tuned engines. Its broad fuel compatibility also makes it useful for projects that switch between gasoline and ethanol blends.

Those who should look elsewhere include buyers who require a pump pre-fitted with specific fittings or a factory-matched connector; several customers noted missing or incompatible fittings, so professional installations that demand plug-and-play connectors may prefer a kit that includes exact hoses and adapters.

Pros & Cons

Pros

• Solid build quality and reliable functionality under load, matching customer impressions of good construction.
• High-flow capability that supports up to 300 LPH at elevated voltage, useful for higher-demand fuel systems.
• Works with multiple fuel types including E85 and diesel, giving flexibility for different applications.

Cons

• May arrive without the exact fittings needed for some vehicles, so additional adapters or hose ends are often required.

Specifications

Brand	EVIL ENERGY
Voltage	12V DC system
Test Flow	200 LPH (75 PSI & 12V); 255 LPH (43 PSI & 12V); 300 LPH (43 PSI & 13.5V)
Operating Pressure	75 PSI
Operating Temperature	-68 F to 194 F
Fuel Compatibility	Gasoline, pump gas, race gas, diesel, E85, alcohol/ethanol
Mounting	External inline, recommended below tank with 60MM bracket clamp

Our Verdict

The EVIL ENERGY External Inline Fuel Pump is a practical, value-minded choice for builders and mechanics who need a high-flow 12V pump with broad fuel compatibility and rugged temperature tolerance. It performs well and is good value if you are prepared to fit the correct hoses and fittings during installation; buyers seeking true plug-and-play should plan for additional adapters.

Frequently Asked Questions

Is this pump compatible with E85?
The pump is compatible with E85 and other alcohol/ethanol blends according to the manufacturer specifications.

Where should the pump be mounted?
It is recommended to install the pump below the fuel tank so fuel is gravity-fed to the unit, which eases priming and reduces strain.

Does it include all necessary fittings?
Installation instructions are included, but customers report the supplied fittings may not match every vehicle, so additional adapters or hose ends may be required.