PRO600 V8 Secondary Injector Harness

The FuelTech PRO600 V8 Secondary Injector Harness is a precision fuel injection component engineered for high-performance EV1-style injector integration on the FuelTech PRO600 engine management system. This secondary injector harness enables tuners and engine builders to add a second set of injectors to their fuel injection setup, allowing for advanced fuel staging, improved atomization at high RPM, and optimized air-fuel mixture control across the entire power band. Built to OEM electrical standards, this harness provides reliable signal delivery and power distribution for demanding street and motorsport applications.

The harness is specifically designed to work with EV1-connector injectors, the industry-standard fuel injector interface used across a wide range of platforms and displacement levels. Proper harness design is critical for fuel injection performance—inadequate wire gauge, poor connector contact, or improper routing can result in voltage drop that causes injector pulse-width inconsistencies and lean-out conditions. This FuelTech component maintains full signal integrity and current delivery, essential for precise fuel metering when running split-injection tuning strategies. The harness ships ready to integrate into a PRO600 wiring system without modification.

Engine builders and performance tuners standardly deploy secondary injector harnesses when upgrading naturally aspirated motors to forced induction, increasing displacement, or targeting high-horsepower levels where single injector flow becomes limiting. Secondary injection staging also enables cooler idle quality and smoother low-RPM drivability by controlling injector duty cycle. This harness is essential for anyone leveraging the PRO600's advanced fuel control features and running dual-fuel-rail configurations. Compatible with the full FuelTech PRO600 ECU platform, it integrates seamlessly into OEM and custom fuel systems alike.