EVIL ENERGY Fuel Pressure Regulator 6AN EFI Bypass Return Adjustable 20-140psi Black&Red

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Product Compare

Pressure Adjustment Range	30-70PSI	20-75&75-120PSI	30-80&80-140PSI	5-12 PSI	4.5-9 PSI
Product Type	EFI Bypass Return	EFI Bypass Return	EFI Bypass Return	Carburetor Adjustable	Carburetor Adjustable
Main Fitting Size	6AN	6AN	10AN	6AN	3/8IN NPT
Fuel Compatibility	Gasoline, E85, alcohol/ethanol Not compatible with diesel fuel [CPE fuel lines not compatible with E85]	Gasoline, E85, alcohol/ethanol Not compatible with diesel fuel [CPE fuel lines not compatible with E85]	Gasoline, E85, alcohol/ethanol Not compatible with diesel fuel [CPE fuel lines not compatible with E85]	Gasoline, E85, Diesel, Ethanol/Alcohol [CPE fuel lines not compatible with E85]	Gasoline, E85, Diesel, Ethanol/Alcohol [CPE fuel lines not compatible with E85]
Material	6061-T6 aluminum alloy	6061-T6 aluminum alloy	6061-T6 aluminum alloy	6061-T6 aluminum alloy	6061-T6 aluminum alloy
Package	1×Fuel pressure regulator 1×Pressure gauge 1×Bracket 2×AN6 port plug 4×6AN to 6AN ORB fitting 1×6AN ORB to 6AN Barb fitting 1×6AN to M12×1.25 fitting 1×6AN to M14×1.5 fitting 3×6AN Stainless Steel Braided CPE Fuel Line	1×Fuel pressure regulator 1×Pressure gauge 1×Replacement spring 1×AN10 port plug 1×Allen key 1×Sealant tape 1×6AN to 6AN ORB fitting 2×6AN to AN10 ORB fittings 2×AN8 to AN10 ORB fittings 2×AN10 to AN10 ORB fittings	1×Fuel pressure regulator 1×Pressure gauge 1×Replacement spring 1×AN10 ORB port plug 1×Allen key 1×Sealant tape 3×AN10 ORB to AN6 fitting 3×AN10 ORB to AN8 fitting 3×AN10 ORB to AN10 fitting	1x Fuel Pressure Regulator 1x Pressure Gauge (5-12 PSI) 1x Mounting Bracket 3x 6AN to 6AN ORB Fittings 1x Allen Key + Sealant Tape	1x Fuel Pressure Regulator 1x Pressure Gauge 1x Mounting Bracket 1x 3/8IN NPT Port Plug 3x 3/8IN NPT to 6AN Fittings 1x Allen Key + Sealant Tape All Required Screws (Self-tapping & Cheese Head)

30-70PSI:20-75&75-120PSI:
30-80&80-140PSI:
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• Durable Construction: Precision-machined 6061-T6 aluminum alloy, corrosion-resistant and heat-tolerant (withstands harsh engine bay conditions), ensuring long-term reliability.
• EFI System Compatibility： Fits most vehicles' electronic fuel injection (EFI) systems; maintains stable fuel pressure for optimized combustion, performance, and fuel economy.
• Fuel Compatibility：Works with gasoline, E85, and alcohol/ethanol;（not compatible with diesel fuel）note: nylon braided fuel lines are not E85-compatible (use PTFE-lined hoses for E85).
• Bypass Return Design：Prevents pressure spikes during acceleration, boost, or high-load scenarios, protecting fuel injectors and rails from damage.
• All-in-One Kit： Each variant includes essential components (fuel pressure regulator, pressure gauge, fittings, sealant tape, tools like Allen keys); no extra purchases needed for standard installation.
• Easy Installation & Tuning： Adjust pressure via top set screw (clockwise = increase, counterclockwise = decrease); use thread sealant tape on NPT gauge port to avoid leaks; professional installation highly recommended (especially for high-pressure variants).

The EVIL ENERGY EFI Bypass Fuel Pressure Regulator is a precision-engineered component designed to maintain stable fuel pressure for EFI systems, ensuring optimal combustion efficiency, engine performance, and fuel economy. Crafted from high-strength 6061-T6 aluminum alloy, it withstands harsh engine bay conditions (heat, vibration, corrosion) and is compatible with common performance fuels (gasoline, E85, alcohol/ethanol) — making it ideal for daily drivers, modified vehicles, and high-performance builds.

30-70PSI: Daily-Driven EFI Systems
This fixed-range regulator (30-70PSI) is tailored for standard EFI vehicles, providing reliable pressure control without extra adjustments. It includes 3×6AN braided CPE fuel lines and fuel rail-specific fittings (6AN to M12x1.25 / M14x1.5), eliminating the need for separate part purchases. Perfect for commuters or mild modifications where consistent, moderate pressure is required.

20-75&75-120PSI: Flexible Tuning for Modified Builds
With two pressure ranges (via replaceable spring), this variant adapts to diverse needs: 20-75PSI for street-focused setups, 75-120PSI for more aggressive modifications (e.g., turbocharged daily drivers). It comes with multi-size ORB fittings (6AN/8AN/10AN) for custom routing and an Allen key for easy spring replacement — ideal for enthusiasts who upgrade their engine over time.

30-80&80-140PSI: High-Performance Racing & Turbo Setups
Built for high-horsepower EFI systems (e.g., drag racing, track cars), this 10AN regulator offers extended pressure range (30-140PSI via replaceable spring) and a dedicated vacuum interface for precise pressure matching under boost. It includes 9 multi-size ORB fittings (AN6/8/10 to 10AN) for complex fuel system routing, ensuring stable pressure even in extreme load conditions.

Why Choose EVIL ENERGY EFI Fuel Pressure Regulator?

1. Durable, Performance-Proven Build

• 6061-T6 aluminum alloy resists corrosion and engine bay heat (up to 250°F), ensuring long-term reliability.
• Bypass return design prevents pressure spikes during acceleration/boost, protecting injectors and fuel rails.

2. Tailored to Your Build's Needs

• 3 variants cover all EFI scenarios: daily driving (30-70PSI), flexible modifications (20-75&75-120PSI), high-performance racing (30-140PSI).
• Replaceable springs (Variant 2/3) let you upgrade pressure without buying a new regulator.

3. All-in-One Kit Saves Time & Money

• Each variant includes all necessary parts (fittings, gauge, tape, tools) — no extra purchases for standard installation.
• Multi-size fittings adapt to existing fuel systems, reducing custom fabrication costs.

4. Safe & Easy to Install

• Clear installation notes (e.g., NPT sealant tape, fitting usage) minimize mistakes.
• Professional installation recommended for high-pressure to ensure optimal tuning and safety.