FuelTech FT550 K-Series Plug & Play Standalone Adapter | VTI

The complete plug-and-play solution for converting your Honda K-Series engine harness to a FuelTech FT550 standalone ECU. Built using Teflon (mil-spec style) wire and flame-resistant loom materials, this adapter is designed for reliability, motorsport durability, and clean integration — completely prewired and ready to install.

This is not a universal patch harness. This is a structured conversion adapter built for serious standalone setups.

Designed For

• K20 & K24 engine platforms
• Acura RSX (DC5)
• Honda EP3 Civic Si
• K-swapped chassis running OEM-style K harnesses
• Street, drag, drift, and road race builds

Integrated Connections

• AUX1 & AUX2 — auxiliary output capability
• INJ Expansion — additional injector outputs
• CANBUS — direct connection to FT550 for dash, logging & peripherals
• A & B — main FT550 ECU connectors
• RVS — rear speed sensor input for traction control & data logging

All circuits cleanly integrated — no unnecessary splicing or patch wiring.

Construction Details

• Teflon wire construction
• Flame-resistant loom material
• Professionally terminated connectors
• Fully prewired and labeled
• Motorsport-grade assembly standards

Important Installation Notes

Connector Fitment: When using with a stock K20 harness, one connector lock will require minor modification for proper fitment.

EP3 / RSX Main Relay: When installing in an EP3 Civic Si or K20 RSX chassis, an additional relay must be added to properly initiate and control the main relay system. Verify your chassis configuration before ordering.

What's Included

• Fully assembled FT550 K-Series adapter
• Basic startup FuelTech base map
• Installation notes

Optional tuning support available upon request — leave tuning requests in checkout notes.

Why VTI?

• True plug-and-play integration — no guesswork
• Clean standalone conversion strategy
• Proper auxiliary expansion support
• CANBUS integration done correctly
• Built by experienced harness manufacturers

Need a custom FT550 configuration? Contact us directly for advanced integration, additional outputs, or full standalone harness builds.