Description

MAPerformance Evo X Fuel Upgrade Kit – 450whp+ on E85 / 550whp+ on 93 Octane (2008–2015)

Firstly, Upgrade the fuel delivery system in your Mitsubishi Lancer Evolution X with the MAPerformance Evo X 450 fuel upgrade kit, designed for performance builds targeting 450 wheel horsepower or more on E85 and 550 wheel horsepower or more on 93-octane gasoline. This package combines upgraded fuel injectors, a high-flow fuel pump, and supporting fuel system components to help meet the demands of a modified 4B11T engine.

Whether you are building a responsive street Evo X or preparing your car for track use, a properly matched fuel system is essential. As boost and power demands increase, the factory setup may no longer provide the fuel delivery your engine requires. This MAPerformance kit brings key upgrades together in one package, making it easier to plan your fuel system around your performance goals.

Why Choose the MAPerformance Evo X 450 Fuel Upgrade Kit?

The MAPerformance Evo X 450 fuel upgrade kit is intended for owners who want more fuel delivery capacity without sourcing every component separately. It is designed for 2008–2015 Mitsubishi Lancer Evolution X models and supports builds using either E85 ethanol fuel or 93-octane gasoline, subject to the overall engine setup and calibration.

Firstly, the kit upgrades the fuel injectors to support the greater fuel demand of a modified turbocharged engine. Secondly, the included Walbro 450 LPH high-pressure fuel pump provides increased in-tank fuel delivery capacity. Thirdly, the MAPerformance inline fuel filter and installation components help complete the upgrade.

Together, these parts provide a practical foundation for a tuned Evo X fuel system. However, the final power your vehicle can achieve depends on more than the fuel kit alone.

Key Features and Included Components

This fuel upgrade package combines several important parts for the Mitsubishi Evolution X.

• Injector Dynamics ID1050x fuel injectors: Designed for performance applications, these injectors provide increased fuel delivery capacity and include plug-and-play adapters.
• Walbro 450 LPH fuel pump: A high-flow, E85-safe pump designed to support demanding fuel system applications.
• MAPerformance inline fuel filter kit: Helps capture contaminants before they reach the fuel injectors.
• MAPerformance fuel pump installation kit: Provides the specified components for installing the Walbro 450 LPH pump in the Evo X fuel system.
• Supporting adapters and installation hardware: Included components help integrate the upgraded parts, although some vehicle-specific modifications are still required.

Important: The fuel rail is not included in the standard package. Check the selected product options before ordering, as additional components may be offered separately. Confirm the current kit contents with the seller if you need to verify a particular fitting, hose, or accessory.

E85 and 93-Octane Fuel System Applications

The kit is marketed for Evo X builds targeting 450whp+ on E85 or 550whp+ on 93-octane gasoline. These figures are performance targets, not guaranteed results. Actual output varies with turbocharger choice, engine condition, fuel pressure, boost level, tuning, and other supporting modifications.

E85 can require a greater volume of fuel than gasoline to produce comparable power. That makes injector capacity and pump flow especially important for ethanol-based builds. The Walbro 450 LPH pump and ID1050x injectors give modified Evo X owners upgraded fuel system components to work with when planning an appropriate calibration.

For a 93-octane setup, the required fuel delivery depends on the engine’s airflow and power goals. Your tuner should confirm that injector duty cycle, fuel pressure, and fuel supply remain within suitable limits throughout the rev range.

This package is best considered as one part of a complete performance build. It does not replace the need for professional tuning or verification that the rest of the engine and fuel system can safely support the intended output.

Vehicle Fitment and Compatibility

The MAPerformance Evo X fuel upgrade kit is listed for the following application:

• Make: Mitsubishi
• Model: Lancer Evolution X
• Model years: 2008–2015
• Engine platform: 4B11T 2.0-litre turbocharged engine
• Fuel applications: E85 and 93-octane gasoline, when properly configured
• Part number: EVOX-450FK; some listings use the updated suffix EVOX-450FK-2

Confirm your model year, vehicle configuration, and exact kit part number before purchase. If your vehicle has an unusual fuel system configuration or extensive aftermarket modifications, ask your installer to check compatibility before ordering.

Installation and Tuning Considerations

This is a performance fuel system upgrade, not simply a direct replacement for every factory component. Installation may require modifications to the wiring, fuel lines, and fuel pump module. Professional installation is recommended if you do not have the tools or experience to work safely with automotive fuel systems.

After installation, the engine management system must be calibrated for the upgraded injectors and the fuel being used. Injector scaling and characterization, fuel pressure, air-fuel ratio, and overall engine operation should be checked by a qualified tuner. Do not assume the car is ready for higher boost or full-throttle use immediately after fitting the parts.

The kit is also listed as not CARB legal. Buyers in California and other locations with emissions requirements should check applicable regulations before purchasing or installing it.

Frequently Asked Questions

What power level is the MAPerformance Evo X 450 fuel upgrade kit designed for?

It is marketed for builds targeting 450whp or more on E85 and 550whp or more on 93-octane gasoline. Actual results depend on the engine, turbocharger, tuning, and supporting modifications.

Does this kit fit every 2008–2015 Mitsubishi Evo X?

It is listed for the 2008–2015 Lancer Evolution X platform. Check your exact model and the current part number before ordering, especially if the vehicle has aftermarket fuel system changes.

Is a fuel rail included?

No. The standard kit listing states that the fuel rail is not included. Purchase a compatible aftermarket rail separately if your build requires one.

Can I use this kit with E85?

The package includes a Walbro 450 LPH fuel pump described as E85-safe, and the kit is marketed for E85 applications. The complete fuel system, seals, lines, and other components must also be compatible with the fuel you intend to use.

Will this kit deliver the advertised horsepower automatically?

No. The advertised figures are build targets, not guaranteed power outputs. Appropriate supporting modifications, adequate fuel pressure, and professional ECU tuning are essential.

Does installation require modifications?

Yes. Product listings note that modifications to wiring, fuel lines, and the fuel pump module may be required. Professional installation is recommended.

Is this kit legal for street use in California?

The product is listed as not CARB legal. Check local emissions and road-use regulations before purchasing or installing it.

Order Your MAPerformance Evo X Fuel Upgrade Kit

If you are planning a higher-power Mitsubishi Evolution X build, the MAPerformance Evo X 450 fuel upgrade kit brings together upgraded injectors, a high-flow fuel pump, and supporting fuel system components in one performance-focused package. Confirm your fitment, fuel choice, and tuning requirements, then shop Evomotorparts for Mitsubishi Evo parts to help move your build toward its performance goals.