Collection: FuelTech Harnesses, Adapters & Patch Harness Systems
FuelTech Harnesses, Adapters & Patch Harness Systems
VTI Motorsports supplies professional FuelTech harness systems engineered for complete standalone ECU integration and platform-specific adaptation.
This collection includes full engine harnesses, patch harnesses, and adapter solutions designed to support structured FuelTech installations.
Complete FuelTech Engine Harness Systems
Standalone engine harness solutions compatible with:
• FuelTech FT450
• FuelTech FT550
• FuelTech FT600
Engineered for reliable ignition control, injector sequencing, and sensor integration across Honda and performance platforms.
FuelTech Adapter Harnesses
Plug-and-play adapter systems designed to:
• Convert factory wiring to FuelTech ECU platforms
• Support chassis-to-ECU integration
• Maintain proper signal routing
• Simplify standalone conversions
Designed for clean installation without permanent chassis modification.
Patch Harness Solutions
FuelTech patch harnesses used to:
• Bridge factory engine harnesses to standalone ECUs
• Support partial conversions
• Enable ECU upgrades without full rewire
Ideal for performance upgrades and staged standalone transitions.
Professional Standalone Integration Standard
All FuelTech harness systems are built to support proper grounding strategy, stable power distribution, and shielded signal routing required for high-performance standalone engine management.
Designed for street builds, turbo applications, and motorsport use.
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Snake Tuning Mini Dizzy Standalone Kit | VTI Motorsport Loom + DENSO Options
Regular price From $500.00 USDRegular priceSale price From $500.00 USD -
Fueltech FT550 K Series Standalone Honda K20 K24 Engine Harness w/ Built in Fusebox
Regular price $1,099.00 USDRegular priceSale price $1,099.00 USD -
Mil-Spec FuelTech FT450 Engine Harness – Honda 4-Cylinder | Pre-Order | VTI
Regular price From $1,380.00 USDRegular priceSale price From $1,380.00 USD -
FuelTech FT450 / FT550 Unterminated Wiring Harness – A Connector
Regular price $139.00 USDRegular priceSale price $139.00 USD -
FuelTech FT550 Unterminated Wiring Harness – B Connector
Regular price $139.00 USDRegular priceSale price $139.00 USD
Confirm Compatibility
Use the collection title, product application details, and vehicle or ECU options to narrow the correct wiring solution. If your chassis, engine, ECU, or swap combination is not clearly listed, contact VTI before ordering.
VTI-Built vs Partner Products
Products manufactured by VTI Motorsports are identified in their individual listings. Partner and vendor products remain available where they support a complete wiring or ECU installation.
Custom Configurations
For combinations outside the production catalog, submit a custom harness request with the chassis, engine, ECU, trigger system, injector type, and required sensors or auxiliary functions.



