EVIL ENERGY 255LPH High Pressure External Electric Fuel Injection Pump 12V-13.5V - Stable Performance for EFI Vehicle Systems

Q: What vehicles are compatible with this 12V electric fuel pump for EFI?

A: This high-flow fuel pump is designed for most EFI systems operating on 12–13.5V DC. It is an ideal universal EFI conversion fuel pump for cars, trucks, boats, and high-performance racing applications that require a stable fuel delivery of 255 LPH to 300 LPH.

Q: Is this inline fuel pump compatible with carbureted engines?

A: No. This electric fuel pump is exclusively engineered for Electronic Fuel Injection (EFI) setups. Because it supports up to 150 PSI closed pressure, the output is too high for standard carbureted systems. For EFI-to-carburetor swaps, a specialized bypass regulator would be mandatory, but we recommend it solely for EFI upgrades.

Q: Does the Evil Energy fuel pump support alternative fuels like Diesel?

A: Yes. While optimized for gasoline systems, its durable aluminum construction allows for compatibility with Diesel. Note: When using it as a diesel transfer pump, an extra pre-filter is highly recommended to protect the external gear-type internal mechanism.

Q: Does this 12V electric fuel pump for EFI require an external fuel pressure regulator?

A: Yes. To maintain the precise fuel control required for performance engines, a fuel pressure regulator is necessary. This pump provides the high-pressure volume (up to 300 LPH peak), and the regulator ensures it stays within your engine’s specific PSI requirements.

Q: Can I install this pump as an in-tank or inline unit?

A: This model is typically designed for inline installation, but please confirm the specifications before setup.

Q: How long does the pump last?

A: With proper installation, clean fuel, and regular maintenance, the pump can deliver long-lasting and dependable service life.

Q: How does the aluminum construction benefit the 12V electric fuel pump for EFI in extreme weather?

A: The high-grade aluminum construction acts as a superior heat sink compared to plastic alternatives. This allows the Evil Energy fuel pump to maintain reliable performance in a vast temperature range (-68°F to 194°F), preventing vapor lock and ensuring stable fuel delivery whether you're in arctic cold or desert heat.

Q: What is the recommended mounting location for this inline fuel pump?

A: For an easy installation and optimal priming, this external gear-type electric fuel pump should be mounted below the fuel tank level. Being a gravity-fed inline fuel pump, placing it lower than the minimum fuel line ensures the 255 LPH fuel pump internals stay lubricated and provide a long-lasting service life.

Q: Does this 300 LPH pump include noise-dampening features?

A: Yes. Unlike louder vibrating models, this 12V electric fuel pump package includes two 50mm brackets with rubber covers. These insulated components significantly reduce resonance against the chassis, making it a surprisingly quiet high-flow fuel pump for both street and EFI upgrade applications.

Q: What amperage fuse should I use for this 12V electric fuel pump for EFI?

A: Given the current draw of 5.0A to 12.3A, we recommend using a 20A or 25A fuse. To ensure precise fuel control and protect your electric fuel pump, always use high-quality insulated terminals (included in the kit) to prevent voltage drops that could affect the 300 LPH peak flow.

Q: Can I use 5/16 and 3/8 rubber hoses directly with this Evil Energy fuel pump?

A: Yes! The 5/16-inch inlet and 3/8-inch outlet are specifically designed for a direct hose connection. This space-saving feature is a major advantage for inline fuel pump setups, as it creates a low leakage risk by eliminating the need for bulky threaded adapters or extra fittings.

Q: Is this high-pressure fuel pump suitable for a 'Sump Tank' or 'Surge Tank' setup?

A: Absolutely. This external gear-type electric fuel pump is frequently used as the primary pressure pump in a surge tank system. It effectively pulls fuel from the reservoir to maintain stable fuel delivery at up to 150 PSI, making it perfect for drift or track cars prone to fuel slosh.

Q: How do I identify if my 12V electric fuel pump for EFI needs a pre-filter?

A: Every high-flow fuel pump requires protection. We strictly recommend a 30-100 micron pre-filter before the inline fuel pump to block debris. This simple step ensures the aluminum construction gears remain undamaged, guaranteeing reliable performance for your gasoline systems.

Q: Why is the gear-type design superior to internal vane pumps for EFI upgrades?

A: The external gear-type mechanism provides a more linear and stable fuel delivery at high pressures. While vane pumps may fluctuate, this 12V electric fuel pump maintains a consistent 225 LPH fuel pump flow even as the 150 PSI closed pressure increases, which is critical for tuned EFI systems.

Q: What should I check if my inline fuel pump fails to prime during easy installation?

A: Ensure there are no air leaks at the 5/16-inch inlet and that the pump is mounted lower than the fuel source. Since this electric fuel pump relies on gravity for the initial prime, a dry start can shorten the long-lasting service life. Verify the 12V DC polarities at the insulated terminals are correct.

Q: How does the Evil Energy fuel pump compare to generic 255 LPH pumps in the market?

A: Most generic pumps use thin steel housings, but our aluminum construction is more corrosion-resistant. Additionally, our 300 LPH peak capacity and the inclusion of a specialized 50mm bracket provide better value and precise fuel control for professional EFI conversion projects.