EVIL ENERGY EFI 255LPH In-Tank Electric Fuel Pump — 255 LPH at 43 PSI, 12V High-Flow Gasoline EFI

EVIL ENERGY EFI 255LPH is a high-flow 12V in-tank electric fuel pump kit that delivers up to 255 LPH at 43 PSI for reliable EFI fuel delivery in gasoline applications.

This EVIL ENERGY intank pump is engineered for electronic fuel injection (EFI) systems that require a higher flow rate and stable pressure. Built for gasoline only, the unit supports a wide operating pressure range so you can dial final delivery with an external regulator. The pump’s tested outputs—255 LPH at 43 PSI and 190 LPH at 80 PSI—give a clear performance picture for tuning, and its design emphasizes steady flow and compatibility with many EFI setups. Note that the 255LPH pump’s outer diameter may differ from some OE units, so hose, filter or inlet adapter changes and professional fitting are commonly recommended.

How much flow and pressure does this pump provide?

The EVIL ENERGY EFI 255LPH pump is rated at 255 liters per hour when tested at 43 PSI, and 190 LPH at 80 PSI, with an operating capability across approximately 15–90 PSI. Actual in-vehicle performance depends on tank location, fuel temperature and system restrictions. Use a suitable regulator to set final fuel rail pressure to match your engine’s EFI requirements.

• Tested flow: 255 LPH at 43 PSI, 190 LPH at 80 PSI
• Operating pressure range: roughly 15–90 PSI
• Final pressure controlled externally by fuel pressure regulator

Will this fit my car’s fuel system and tank opening?

This pump is designed specifically for 12V DC EFI systems and for gasoline only. Because the 255LPH high-flow pump can have a different body diameter than some OE units, physical fitment isn’t guaranteed without checking dimensions. Expect that hoses, filters, inlet socks or mounting hardware might need replacement or adaptation during install.

• 12V DC EFI applications only—do not use with diesel or other fuels
• Check tank opening diameter and clearance before purchase
• May require new hoses, filters or adapters for correct fit

How should the pump be installed and maintained?

Professional installation is strongly recommended because in-tank pumps require correct wiring, secure mounting and proper pressure regulation. Use clean, uncontaminated gasoline—high-impurity fuel shortens pump life. Regularly replace fuel filters and inspect electrical connections to maintain reliable delivery.

• Have a qualified technician perform in-tank installation
• Keep fuel free of debris; replace filters on schedule
• Verify wiring and ground points to avoid voltage drop

What limitations and safety notes should I know?

EVIL ENERGY’s pump is not intended for non-gasoline fuels or for continuous use outside the specified pressure range. Impure or contaminated fuel can accelerate wear and reduce service life. Because diameters can differ from OEM pieces, improper fit can lead to leaks or poor suction if adapters aren’t used.

• Gasoline only—do not use ethanol blends beyond manufacturer guidance
• May require adapters when replacing an original unit with different diameter
• Inspect seals and connections after installation to prevent leaks

Who is this for: The EVIL ENERGY EFI 255LPH pump kit suits tuners, performance enthusiasts and anyone upgrading an EFI system that needs higher flow at moderate rail pressures. It’s ideal when you require a reliable, compact in-tank solution for gasoline engines, but you should be prepared to confirm fitment and have a professional perform the install to ensure safe, leak-free operation.