E888.3 MPI Wire Harness Multi-Port Injection Integration - VW/Audi MQB/e 1.8T/2.0T

VW / Audi EA888 Gen 3 (E888.3) MPI Wire Harness – Plug & Play Multi-Port Injection Integration

The EA888 Gen 3 (E888.3) MPI Wire Harness is engineered to integrate seamlessly with your factory ECU, allowing true OEM-style control of multi-port fuel injection. Designed for clean installation and full DME management, this harness enables port injection and flex fuel functionality without cutting or modifying the factory wiring.

This is the same proven harness solution supplied in many complete MPI fuel kits, offering reliable expansion for high horsepower builds requiring additional fueling capacity.

Key Features

• Full DME Control – ECU-controlled port injectors
• Plug & Play Installation – OEM-style quick connect integration
• Adds 4 EV1 Injector Connections
• Low Fuel Pressure Sensor Connection
• Flex Fuel Sensor Connection
• Dust-resistant and water-resistant sealed connectors
• OEM-grade wiring and materials meeting or exceeding factory standards

What This Harness Supports

• Injector Compatibility: Bosch EV1 Style Injectors
• Flex Fuel Sensor Compatibility: GM / Continental Flex Fuel Sensor
• Fuel Pressure Sensor Compatibility: Bosch Low Pressure Fuel Sensor
• Connection Style: OEM Quick Connect
• Weight: 0.70 lbs

Performance Benefits

The factory direct injection system on the EA888 Gen 3 platform can become a limitation in higher power applications. Adding multi-port injection (MPI) provides the additional fueling headroom needed for ethanol blends, hybrid turbo setups, and aggressive performance calibrations.

Proper ECU software calibration is required to enable port injection control and flex fuel functionality. Most major tuning platforms support MPI activation and flex fuel integration.

Vehicle Fitment – EA888 Gen 3 Applications

• Audi A3 (2017–2020)
• Audi A3 Quattro (2015–2019)
• Audi A4 (2016–2020)
• Audi Q3 (2019–2020)
• Audi S3 (2015–2020)
• Audi TT (2016)
• Audi TT Quattro (2016–2020)
• Volkswagen Arteon (2019–2020)
• Volkswagen Atlas (2018–2019)
• Volkswagen Beetle (2015–2017)
• Volkswagen Golf Alltrack (2017–2019)
• Volkswagen Golf R (2015–2020)
• Volkswagen Golf Sportwagen (2015–2019)
• Volkswagen GTI (2015–2020)
• Volkswagen Jetta (2015–2019)
• Volkswagen Passat (2016–2017)

Perfect for: Big turbo builds, ethanol setups, flex fuel conversions, and high-performance EA888 Gen 3 projects requiring reliable MPI integration.