High Performance Kit

Q: Is a high performance fuel system kit worth it compared to buying individual parts?

Yes, and the main reason is compatibility. When you buy a complete fuel system kit from Evil Energy, every component is pre matched : the fuel pump flow rate is paired with the correct fuel pressure regulator range, the AN fittings match the fuel line size, and the fuel filter micron rating is positioned correctly for your pump. Buying parts individually often leads to mismatched thread sizes, wrong pressure ranges, or missing adapters that cost more in time and return shipping than the kit saves. Each performance kit includes the core fuel delivery components in one box, backed by a 1 year warranty and 180 day return policy. The real cost question is whether your engine upgrade needs supporting modifications beyond what the kit covers. For most LS swap fuel system builds and EFI conversions, the kit handles 80 to 90 percent of the fuel system. The remaining 10 to 20 percent typically involves vehicle specific adapters, a relay and fuse for pump wiring, and a fuel pressure gauge for monitoring.

Q: How do I choose the right performance kit for my engine build?

Start with three decisions: Engine type : For LS swap projects (Chevy 4.8L, 5.3L, 6.0L), choose a kit with a 58 PSI fuel pressure regulator and 300LPH inline fuel pump . For a 350 engine upgrade kit or 2jz engine upgrade kit build running boost, look for an EFI fuel system with a 20 to 120 PSI adjustable regulator . For carbureted engines, select a carburetor fuel system kit with a 5 to 12 PSI regulator . Fuel type : Gasoline works with CPE lines. E85 , methanol, and ethanol require antistatic PTFE fuel line to prevent material degradation. Diesel is compatible with both CPE and PTFE. System layout : Most performance builds use a return style fuel system for better fuel cooling and consistent pressure. Returnless systems are simpler but can cause vapor lock in high heat. Check our return vs returnless guide for details. If your project uses a fuel cell , match the tank capacity to your driving range. A 5 gallon cell suits drag racing, while 10 to 15 gallons works for street and drift builds.

Q: Are Evil Energy performance kits reliable for daily driving and track use?

Evil Energy performance kits use 6061 T6 aluminum fittings , stainless steel filter elements, and PTFE fuel lines rated to 3000 PSI working pressure. The 300LPH fuel pump is tested at 43 PSI and 13.5V. For fuel system reliability , three factors matter most: Vibration dampening on the pump mount. Bolting the pump directly to the frame transmits noise and vibration. Use a rubber isolator between the pump and mounting surface. Dual stage filtration . Run a 100 micron pre filter before the pump to protect it from debris, and a 10 micron post filter before the injectors to protect the engine. Skipping either filter shortens component life. E85 compatibility on every fuel contact component. If you run ethanol, verify that your pump, regulator, seals, O rings, and fittings are all E85 rated. Antistatic PTFE fuel line is required, not optional, for ethanol fuels. The kits are built for daily driving and weekend track use . For dedicated race builds pushing extreme horsepower, additional supporting upgrades like high impedance injectors, upgraded fuel rails , and professional ECU tuning are recommended.

Q: What is included in the kit and what additional parts might I need?

Each Evil Energy complete fuel system kit includes: High flow fuel pump (300LPH or 405LPH external inline) Fuel pressure regulator (adjustable, ranges from 20 to 120 PSI depending on kit) Inline fuel filter (10 micron, 30 micron, 40 micron, or 100 micron depending on configuration) Fuel line (20FT, 6AN, available in CPE, PTFE, or antistatic PTFE) AN fittings (90 degree and straight 6AN fittings, Y block on select kits) Mounting brackets for filter and pump Adapter fittings (M12 x 1.5 and M18 x 1.5 on PTFE configurations) Fuel cell tank kits additionally include the aluminum tank with anti slosh foam, level sender , AN10 to AN6 reducer adapters, and dual filters (100 micron pre and 10 micron post). What is typically not included that you may need: Relay, fuse, and wiring harness for pump electrical connection Fuel pressure gauge for dash or regulator monitoring Fuel injectors and fuel rails (engine specific, sold separately) Vehicle specific tank adapters or bulkhead fittings for your particular chassis PTFE hose end fittings in additional angles if your routing requires more than the included 90 degree and straight fittings Always check the what is in the box section on each product page before ordering to confirm the exact parts list for your chosen configuration.

Q: How difficult is the installation and do I need professional help?

Installation difficulty depends on your experience with fuel system work and your build complexity. If you have assembled AN fittings , routed PTFE fuel line , and set EFI pressure before, the kits are designed for DIY installation. Key installation steps: Mount the fuel pump near the tank, below the outlet level, to allow gravity feed. Keep it away from exhaust heat and moving parts. Install the pre filter (100 micron) before the pump and the post filter (10 micron) after the pump, before the regulator. Route the fuel line with gradual bends. Use 45 degree or 90 degree fittings instead of forcing sharp turns in PTFE hose. Set your base fuel pressure on the regulator according to your injector and ECU requirements. Verify pump voltage under load using a multimeter. Voltage drop reduces fuel flow. Check every fitting for leaks with the pump running before starting the engine. Professional installation is recommended if your build involves custom tank modification , bulkhead fitting installation through body panels, ECU tuning for modified injector sizing, or electrical wiring that exceeds your experience. A mistake in fuel system assembly can cause leaks, fire risk, or engine damage, so when in doubt, consult a qualified mechanic.

Complete Performance Kit Solutions for Fuel System Upgrades

Building a high output engine means your fuel system has to keep up. Evil Energy performance kits eliminate the guesswork of matching components by bundling a high flow fuel pump, fuel pressure regulator, inline fuel filter, AN fittings, and PTFE fuel line into one complete fuel system kit. Whether you are running an LS swap fuel system, building a 350 engine upgrade kit project, a 2jz engine upgrade kit build, or even 100cc bicycle engine kit upgrades that demand better fuel delivery, every kit on this page solves the same problem: not knowing which parts work together. Each package ships with pre matched components so you spend less time sourcing hardware and more time building.

Which Performance Kit Fits Your Engine Upgrade

Start by matching your engine type and fuel type to the right kit. The table below breaks down the four core fuel system kit categories so you can find your match in seconds.

Kit Type	Best For	Key Components	Fuel Compatibility
LS Swap Fuel System Kit	1999 to 2014 Chevy LS 4.8L / 5.3L / 6.0L and LS based swaps	300LPH pump, 58 PSI regulator, 6AN PTFE line, 10 micron filter	Gasoline, E85, Diesel
Fuel Cell Tank Kit	Racing, drifting, off road, S10 bed mount, custom chassis	5 / 10 / 15 gal aluminum tank, pump, dual filters, regulator, fittings	Gasoline, Diesel, Race Gas (E85 with PTFE)
EFI Fuel System Bundle	Return style EFI, turbo, supercharged street builds	Bypass regulator 20 to 120 PSI, CPE / PTFE lines, Y block	Gasoline, E85 (with PTFE)
Carburetor Fuel System Kit	Carbureted V8, classic truck, muscle car restoration	12V electric pump, 5 to 12 PSI regulator, 20FT NBR / PTFE hose	Gasoline, Race Gas

Every Evil Energy performance kit offers three fuel line material options so you can match your fuel system to the exact fuel you run. CPE lines deliver budget friendly performance for standard gasoline. Standard PTFE fuel lines provide zero permeation and broad chemical resistance for street and track. Antistatic PTFE is required for E85, methanol, and ethanol builds where fuel system degradation is a concern. All AN fittings are machined from 6061 T6 aluminum with black anodized coating for corrosion resistance. Before ordering, confirm your base fuel pressure, pump flow rate at target pressure, and whether your build needs a return style fuel system or returnless layout. Need help choosing a tank size? Read our fuel cell sizing guide. For LS specific recommendations, check the LS swap guide. For installation tips including vibration dampening and fitting cleanup, see our fuel system installation guide. Running ethanol? Our E85 flex fuel guide covers fuel line selection and conversion details. You can also browse high performance fuel lines for standalone hose and fitting kits.

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FAQs about High Performance Kit

Is a high performance fuel system kit worth it compared to buying individual parts?

Yes, and the main reason is compatibility. When you buy a complete fuel system kit from Evil Energy, every component is pre matched: the fuel pump flow rate is paired with the correct fuel pressure regulator range, the AN fittings match the fuel line size, and the fuel filter micron rating is positioned correctly for your pump. Buying parts individually often leads to mismatched thread sizes, wrong pressure ranges, or missing adapters that cost more in time and return shipping than the kit saves. Each performance kit includes the core fuel delivery components in one box, backed by a 1 year warranty and 180 day return policy.

The real cost question is whether your engine upgrade needs supporting modifications beyond what the kit covers. For most LS swap fuel system builds and EFI conversions, the kit handles 80 to 90 percent of the fuel system. The remaining 10 to 20 percent typically involves vehicle specific adapters, a relay and fuse for pump wiring, and a fuel pressure gauge for monitoring.

How do I choose the right performance kit for my engine build?

Start with three decisions:

Engine type: For LS swap projects (Chevy 4.8L, 5.3L, 6.0L), choose a kit with a 58 PSI fuel pressure regulator and 300LPH inline fuel pump. For a 350 engine upgrade kit or 2jz engine upgrade kit build running boost, look for an EFI fuel system with a 20 to 120 PSI adjustable regulator. For carbureted engines, select a carburetor fuel system kit with a 5 to 12 PSI regulator.
Fuel type: Gasoline works with CPE lines. E85, methanol, and ethanol require antistatic PTFE fuel line to prevent material degradation. Diesel is compatible with both CPE and PTFE.
System layout: Most performance builds use a return style fuel system for better fuel cooling and consistent pressure. Returnless systems are simpler but can cause vapor lock in high heat. Check our return vs returnless guide for details.

If your project uses a fuel cell, match the tank capacity to your driving range. A 5 gallon cell suits drag racing, while 10 to 15 gallons works for street and drift builds.

Are Evil Energy performance kits reliable for daily driving and track use?

Evil Energy performance kits use 6061 T6 aluminum fittings, stainless steel filter elements, and PTFE fuel lines rated to 3000 PSI working pressure. The 300LPH fuel pump is tested at 43 PSI and 13.5V. For fuel system reliability, three factors matter most:

Vibration dampening on the pump mount. Bolting the pump directly to the frame transmits noise and vibration. Use a rubber isolator between the pump and mounting surface.
Dual stage filtration. Run a 100 micron pre filter before the pump to protect it from debris, and a 10 micron post filter before the injectors to protect the engine. Skipping either filter shortens component life.
E85 compatibility on every fuel contact component. If you run ethanol, verify that your pump, regulator, seals, O rings, and fittings are all E85 rated. Antistatic PTFE fuel line is required, not optional, for ethanol fuels.

The kits are built for daily driving and weekend track use. For dedicated race builds pushing extreme horsepower, additional supporting upgrades like high impedance injectors, upgraded fuel rails, and professional ECU tuning are recommended.

What is included in the kit and what additional parts might I need?

Each Evil Energy complete fuel system kit includes:

High flow fuel pump (300LPH or 405LPH external inline)
Fuel pressure regulator (adjustable, ranges from 20 to 120 PSI depending on kit)
Inline fuel filter (10 micron, 30 micron, 40 micron, or 100 micron depending on configuration)
Fuel line (20FT, 6AN, available in CPE, PTFE, or antistatic PTFE)
AN fittings (90 degree and straight 6AN fittings, Y block on select kits)
Mounting brackets for filter and pump
Adapter fittings (M12 x 1.5 and M18 x 1.5 on PTFE configurations)

Fuel cell tank kits additionally include the aluminum tank with anti slosh foam, level sender, AN10 to AN6 reducer adapters, and dual filters (100 micron pre and 10 micron post).

What is typically not included that you may need:

Relay, fuse, and wiring harness for pump electrical connection
Fuel pressure gauge for dash or regulator monitoring
Fuel injectors and fuel rails (engine specific, sold separately)
Vehicle specific tank adapters or bulkhead fittings for your particular chassis
PTFE hose end fittings in additional angles if your routing requires more than the included 90 degree and straight fittings

Always check the what is in the box section on each product page before ordering to confirm the exact parts list for your chosen configuration.

How difficult is the installation and do I need professional help?

Installation difficulty depends on your experience with fuel system work and your build complexity. If you have assembled AN fittings, routed PTFE fuel line, and set EFI pressure before, the kits are designed for DIY installation.

Key installation steps:

Mount the fuel pump near the tank, below the outlet level, to allow gravity feed. Keep it away from exhaust heat and moving parts.
Install the pre filter (100 micron) before the pump and the post filter (10 micron) after the pump, before the regulator.
Route the fuel line with gradual bends. Use 45 degree or 90 degree fittings instead of forcing sharp turns in PTFE hose.
Set your base fuel pressure on the regulator according to your injector and ECU requirements.
Verify pump voltage under load using a multimeter. Voltage drop reduces fuel flow.
Check every fitting for leaks with the pump running before starting the engine.

Professional installation is recommended if your build involves custom tank modification, bulkhead fitting installation through body panels, ECU tuning for modified injector sizing, or electrical wiring that exceeds your experience. A mistake in fuel system assembly can cause leaks, fire risk, or engine damage, so when in doubt, consult a qualified mechanic.

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High Performance Kit

Complete Performance Kit Solutions for Fuel System Upgrades

Which Performance Kit Fits Your Engine Upgrade

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