EVIL ENERGY Fuel Pressure Regulator 6AN EFI Bypass Return Adjustable (20-75 PSI, 75-120 PSI) – Black
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- £95.82
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Description
xUpgrade your EFI fuel system with the EVIL ENERGY Fuel Pressure Regulator, a compact, dependable bypass regulator crafted for precise control and straightforward tuning. The matte black finish pairs with durable construction for a clean install while the internal geometry supports smooth fuel flow under varying engine demands. This regulator is designed to blend with a wide range of vehicles and EFI layouts, helping you achieve consistent fuel rail pressure without guesswork.
Designed to fit most vehicles’ EFI setups, it supports gasoline, E85, and ethanol blends. Note: diesel fuels are not supported, and nylon braided hoses are not compatible with E85. Proper selection of compatible lines and connectors helps maintain reliable performance in daily driving, spirited acceleration, or tuning sessions.
Key benefits and features
- Dual-pressure capability: the pre-installed spring covers 20-75 psi, while a replacement spring enables 75-120 psi for higher-demand applications
- Top-set screw offers quick, on-vehicle pressure adjustment; swap to the higher-pressure spring when needed to match fuel type or boost levels
- Includes a full hardware kit: regulator, pressure gauge, replacement spring, a port plug, Allen key, sealant tape, and assorted AN fittings for versatile plumbing
- Multiple AN/BON fittings (AN6, AN8, AN10 variants) provide flexible connection options across common EFI layouts
What’s in the box
- 1x fuel pressure regulator
- 1x pressure gauge
- 1x replacement spring
- 1x AN10 port plug
- 1x Allen key
- 1x sealant tape
- 1x AN6 to AN6 ORB fitting
- 2x AN6 to AN10 ORB fittings
- 2x AN8 to AN10 ORB fittings
- 2x AN10 to AN10 ORB fittings
Installation notes and tips
- When installing the NPT pressure gauge port, use thread sealant tape to ensure a tight seal
- Professional installation is highly recommended to ensure correct fitment and leak-free operation
Real-world use scenarios
In daily street use, stable rail pressure can help maintain consistent fueling as engine load shifts from idle to acceleration. In tuning work, the adjustable range supports different fuel types and performance goals, enabling you to tailor the regulator to your setup. For higher performance builds, switching to the 75-120 psi spring can help align fuel pressure with increased boost or altered injector characteristics, while keeping overall system behavior predictable under load.
Whether you’re dialing in a clean idle, planning for a fuel-type change, or calibrating for a mild performance upgrade, this regulator offers a practical balance of versatility, durability, and ease of use without requiring specialized tools for routine adjustments.
FAQ
Q: What is the EVIL ENERGY Fuel Pressure Regulator compatible with?
A: Designed for most EFI systems, it supports gasoline, E85, and ethanol blends; not suitable for diesel.
Q: What exactly is included, and how adjustable is the pressure?
A: The kit includes regulator, gauge, springs, fittings, and tools. Pre-installed spring covers 20-75 psi; replacement spring raises to 75-120 psi; adjust via the top set screw.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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