FT450/550 4 Cylinder Universal A Harness

Technical Specifications:

• 4 EV1 injectors
• 4 Smart coils
• FuelTech Peak and Hold external drivers ready
• FuelTech WB-Nano O2 ready
• GM style intake air temperature sensor ready
• GM style engine temperature sensor ready
• 2 pressure sensors ready for fuel, oil / another 0-5V sensor
• Extra output connector for generic use
• Crank and CAM connectors (hall and VR options included)

This harness was designed for systems with up to 4 injectors, 4 smart coils and a FuelTech Wideband Nano O2 with Bosch LSU 4.2 sensor. It's setup to run semi-sequential or multipoint injection and wasted spark. It is already wired for FuelTech Peak and Hold drivers when using 4 low impedance injectors. When using high impedance injectors, a Peak and Hold driver is not needed and in this case, only a bypass connector is required (jumper included). There are 3 separate relays to power the whole system, separating the injectors and coils from the electronics. To activate coils and injectors relays the Blue#6 output must be configured as Fuel pump or RPM activation.

*This is only the A harness which is all the FT450 requires.
If you are using an FT550 and want to use all of the extra inputs & outputs, you will need to purchase the B expansion harness as well.