OctoMotive MQB EA888.3/4 Tucked MPI Wiring Harness – V2

Modular. Serviceable. Built for the Way You Actually Build.

The evolution of our proven tucked harness is here. 

The V2 harness takes everything you loved about our original tucked MPI system — clean, OEM+ aesthetics, flawless fitment, and motorsports-inspired style — and makes it smarter.

Fully modular, fully adaptable: factory manifold? Aftermarket manifold? No problem. V2 plugs seamlessly into your factory ECU and engine bay fuse box, giving your MQB build the ultimate blend of performance, reliability, and show-ready looks.

What’s New in V2? 

Modular Injector Options (EV1 or EV6) A new main power harness system allows you to select: EV1 injector configuration EV6 injector configuration No compromises. No adapters. No hack wiring pigtails.  EV-1 IS THE STANDARD INJECTOR CONNECTOR FOR ALL MQB MPI KITS

True Serviceability with Deutsch Main Disconnect We’ve integrated a main Deutsch connector that completely changes the game for installs and servicing your engine. Leave injectors, fuel rail and all wiring attached to the manifold. Disconnect one main connector Remove the intake manifold fully wired, No cutting zip ties. No undoing half the engine bay or possibly damaging your harness. 

Bench-Top Pre-Wiring Capability Installation is now dramatically easier. With V2’s modular layout: Fully wire your intake manifold on the workbench Install the main harness in the car Click connectors together after manifold install Clean. Fast. Professional.

Built-In Extended Flex Fuel Capability Like our original system, V2 includes: Extended ethanol content sensor (FFS) wiring for flexible placement (coolant reservoir or manifold area) Integrated low fuel pressure sensor plug Clean, durable motorsport-grade connections throughout

OctoMotive Power & Ground Service Disconnect Still included—and still one of the most underrated features. Our 12V power & ground service disconnect harness with fuse allows engine or harness removal without touching the fuse box. One connector. Done. Because real builds get serviced.

Key Features 

Seamless MPI Port Injection Integration

EV1 or EV6 Injector Modular Options

Modular Main Deutsch Disconnect System

Built-In Flex Fuel (FFS) Wiring – Extended Lead

Low Fuel Pressure Sensor (FPS) Plug

OEM-Level ECU & Fuse Box Integration

Tucked, Clean Engine Bay Appearance 

 What’s in the Box

• 1x OctoMotive Modular Main Power Harness

• 1x EV1 or EV6 Injector Sub-Harness (based on selection)

 • 1x OctoMotive 12V Power & Ground Service Disconnect Harness (w/ fuse)

• 1x OctoMotive MQB MPI Wiring Pin Instruction / Location Sheet