Description

MAPerformance Evo X Fuel Upgrade Kit – 400whp on 93 Octane / 500whp on E85 (2008–2015)

Firstly, Buy the MAPerformance Evo X fuel upgrade kit for 400whp on 93 octane or 500whp on E85. Upgrade your Mitsubishi Lancer Evolution X with the MAPerformance Evo X fuel upgrade kit. This package combines upgraded fuel injectors, a high-pressure fuel pump, and an inline fuel filter to support modified 4B11T engines.

It is designed for builds targeting 400 wheel horsepower (whp) on 93-octane gasoline or 500whp on E85. These targets depend on your engine setup, fuel pressure, and professional tuning.

Instead of sourcing each component separately, you get the key parts needed to increase fuel delivery in one convenient package.

Why Choose This Evo X Fuel Upgrade Kit?

A modified turbocharged engine needs enough fuel to support its power goals. The factory fuel system may become a limitation as you increase boost or install other performance upgrades.

This MAPerformance kit addresses three important areas: fuel delivery, injector capacity, and fuel filtration.

Key benefits include:

• Increased fuel delivery: Supports higher-power engine builds.
• Injector Dynamics ID1050x injectors: Provide increased flow with precise fuel control.
• Walbro 255lph fuel pump: Supplies fuel to meet the demands of many modified setups.
• 40-micron inline fuel filter: Helps protect the injectors from debris.
• Plug-and-play injector adapters: Simplify electrical connections during installation.
• Matched components: Brings the main fuel system upgrades together in one package.

The result is a practical starting point for a performance-focused Evo X build.

What’s Included in the MAPerformance Fuel Kit?

The kit contains four main components. Each plays a specific role in delivering clean, consistent fuel to your engine.

Injector Dynamics ID1050x Fuel Injectors

The kit includes four Injector Dynamics ID1050x injectors with plug-and-play adapters. These performance injectors offer increased fuel capacity while maintaining precise control at different engine loads.

They are suitable for many modified street and track cars. Correct ECU calibration is essential to get the best results from the larger injectors.

Walbro 255lph High-Pressure Fuel Pump

The Walbro GSS342G3 fuel pump increases fuel supply for performance applications. It supports both pump gasoline and E85 when used within its operating limits.

The kit also includes a MAPerformance pump installation kit. This helps fit the upgraded pump into the factory fuel pump assembly.

MAPerformance Inline Fuel Filter

Clean fuel is essential for injector performance. The included MAPerformance inline filter helps remove contaminants before they reach the injectors.

It features a 40-micron stainless steel filter element and supports both gasoline and E85. The external filter also replaces the factory filtration arrangement removed during the pump installation.

Injector Wiring Adapters

The included plug-and-play adapters help connect the ID1050x injectors to the factory wiring harness. This can simplify installation compared with modifying the original wiring.

Always check the supplied components before installation. Follow the manufacturer’s instructions to ensure all connections are secure.

400whp on 93 Octane or 500whp on E85

Your choice of fuel affects the amount of fuel your engine needs. This kit is designed around two common performance targets.

• 93-octane gasoline: Intended for builds targeting 400whp and above.
• E85: Intended for builds targeting 500whp and above.

These figures are manufacturer targets, not guaranteed results. Actual performance depends on the turbocharger, engine condition, boost level, fuel pressure, and calibration.

E85 generally requires more fuel volume than gasoline. Before choosing this kit, ask your tuner to confirm that the pump and injectors will support your planned power level on your chosen fuel.

Vehicle Fitment

This MAPerformance fuel upgrade kit is designed for the following application:

• Make: Mitsubishi
• Model: Lancer Evolution X
• Model years: 2008–2015
• Engine: 4B11T turbocharged four-cylinder
• Part number: EVOX-400FK

Check your vehicle’s model year and existing fuel system before ordering. If your build includes an aftermarket fuel rail or other fuel system modifications, confirm compatibility with the kit.

Please note: A fuel rail is not included in the standard package. You may need to purchase one separately if your setup requires it.

Installation and ECU Tuning

Installing larger injectors and a higher-flow fuel pump changes how fuel reaches the engine. Proper installation and calibration are therefore essential.

During installation, check all fuel lines, fittings, electrical connections, and seals. Inspect the system for leaks before starting the engine.

After installation, have a qualified tuner calibrate the ECU for the ID1050x injectors. The tune should account for injector scaling and latency, then verify fuel pressure and air-fuel ratios under load.

Do not rely on the hardware alone to achieve your power target. The fuel system, turbocharger, engine, and tune must work together.

Product Specifications

• Brand: MAPerformance
• Product: Evo X Fuel Upgrade Kit
• Part number: EVOX-400FK
• Fitment: 2008–2015 Mitsubishi Lancer Evolution X
• Engine: 4B11T
• Target on 93-octane fuel: 400whp+
• Target on E85: 500whp+
• Injectors: Four Injector Dynamics ID1050x injectors
• Fuel pump: Walbro GSS342G3, 255lph
• Pump installation kit: MAPerformance EVOX-FPK
• Inline filter: MAPerformance EVOX-IFF
• Filter element: 40-micron stainless steel
• Injector adapters: Plug-and-play adapters included
• Fuel rail: Not included
• Emissions note: Not CARB legal

The kit contains parts from multiple manufacturers. Check the relevant manufacturer’s warranty terms for each component.

Upgrade Your Mitsubishi Evo X Fuel System

The MAPerformance Evo X fuel upgrade kit brings together the key components needed to increase fuel delivery on a modified 4B11T engine. Its ID1050x injectors, Walbro fuel pump, and inline filter make it a convenient choice for builds targeting 400whp on 93 octane or 500whp on E85.

Choose the kit to simplify your fuel system upgrade, then pair it with suitable supporting parts and professional ECU tuning. Order the MAPerformance Evo X fuel upgrade kit from Evomotorparts.com and prepare your Mitsubishi Evolution X for your next performance goal.