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Featured Products

[Fuel Filter Regulator Kit(No Lines)][LS Swap CPE Fuel Kit]
EVIL ENERGY Universal LS Swap Fuel Kit - 58psi Regulator, 300LPH Pump & AN Fuel Lines Compatible with E85/Gas/Diesel

High-Performance LS Fuel System Kit

  • Optimized for 1999-2014 Chevy LS engines (4.8L/5.3L/6.0L) and swaps(LS-based engines).
  • this complete fuel system upgrade includes a 58psi fuel pressure regulator with 10-micron filtration, a high-flow fuel pump (200-300LPH), and 6AN PTFE braided fuel lines (1500psi rated). Ensures reliable fuel delivery for gasoline, E85, and diesel applications. Ideal for LS engine builds, performance upgrades, and boosted applications with durable, precision-engineered components.
$118.99
$118.99
$141.74
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EVIL ENERGY LS Swap Fuel Filter Regulator 58PSI with 6AN PTFE EFI Fuel Hose KitEVIL ENERGY EVIL ENERGY LS Swap Fuel Filter Regulator 58PSI with 6AN PTFE EFI Fuel Hose Kit
EVIL ENERGY LS Swap Fuel Filter Regulator 58PSI with 6AN PTFE EFI Fuel Hose Kit

Application：1999-2014 Chevrolet V8 4.8L/5.3L/6.0L (LS-based engines)
Item Weight：‎3.76 pounds
Package Dimensions：9.49 x 8.54 x 4.09 inches

$118.99
$118.99
$189.99
A complete EFI fuel system kit including a high-pressure pump, red fuel pressure regulator, and PTFE lines, displayed in a garage with a classic muscle car and a technical tablet showing fuel system diagrams.

Complete EFI Fuel System Kits: Upgrade to Modern Fuel Injection

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An EFI fuel system kit is the essential hardware bridge for converting vehicles from carburetion to high-pressure electronic fuel injection. Designed to maintain a steady 43-60 PSI, these EFI fuel systems ensure precise fuel atomization and improved engine reliability. This guide explores the core components—including high-pressure pumps and PTFE lines—and explains why a specialized...
A performance sports car accelerating on a race track with an E85 fuel nozzle icon and a digital gauge showing 100+ octane. This visual represents the power gains achieved after a flex fuel conversion.

E85 Flex Fuel Guide: Unlock 100+ Octane Power with the Right Conversion Kit

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This comprehensive E85 Flex Fuel conversion guide empowers enthusiasts to unlock 'race gas' performance by harnessing the 100+ octane and superior cooling properties of ethanol. By demystifying the science behind the latent heat of vaporization and the combustion of 2 C8H18 + 25 O2 → 16 CO2 + 18 H2O + Energy, this resource provides...
Evil Energy fuel system troubleshooting guide featuring PTFE line installation, fuel pump vibration dampening setup, and LS swap fuel kit components on a workshop bench.

Fuel System Guide: Fix Noises, Clear Burrs, and Pro-Tips for a Clean Build

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To optimize an Evil Energy fuel system, follow these three steps: 1. Use rubber isolators for vibration dampening to quiet the fuel pump. 2. Inspect AN fittings for internal burrs and clean with compressed air. 3. Perform a precise Evil Energy PTFE line installation using 45°/90° fittings to ensure E85 compatibility and leak-free performance.
Modern car gas engine with transparent cylinders showing internal combustion process and chemical equation of octane combustion.

How Do Gas Cars Work? A Complete Guide to the Internal Combustion Engine

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How do gas cars work? In short, a vehicle operates by converting the chemical energy in gasoline into motion through a process called internal combustion. Within the car engine, a precise mixture of fuel and air is ignited, creating a controlled explosion that drives the pistons and turns the wheels. This guide breaks down...
Cover image for Mastering Your Vehicle's Performance: The Ultimate Guide to the Gas Fuel System showing automotive fuel components.

Mastering Your Vehicle's Performance: The Ultimate Guide to the Gas Fuel System

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Fuel system optimization is the heart of automotive excellence. Whether you’re prepping an LS swap or restoring a classic, understanding the mechanics of your gas fuel system is vital for reliability and power. This comprehensive guide breaks down the anatomy of fuel delivery, answers the common question 'how does a gas tank work?', and...
Return vs. Returnless Fuel Systems: The Ultimate Guide for Performance Builds & LS Swaps EVILENERGY

Return vs. Returnless Fuel Systems: The Ultimate Guide for Performance Builds & LS Swaps

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Choosing the right fuel delivery method is the difference between a reliable daily driver and a performance machine plagued by heat soak. This guide provides a deep technical analysis of the returnless fuel system versus the return style fuel system, specifically tailored for LS swap enthusiasts and classic car restorers. You will learn the...
Comprehensive visual guide to car fuel system and gas tank anatomy featuring EVIL ENERGY performance parts in a professional garage setting.

The Ultimate Visual Guide to Your Car’s Fuel System & Tank Anatomy

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Dive into the anatomy of performance fuel systems with this comprehensive visual guide. We explore detailed car fuel tank diagrams, the engineering behind gas tank baffles, and the plumbing essentials of car fuel line diagrams. Learn why PTFE fuel lines are the gold standard for E85 compatibility and how to choose between return and...