FAST flash harnesses are pre-built harnesses offer added functionality of your XFI system. These fuel injection harnesses have flash adapter connectors for XFI ECU connection and allow you to add a calibration switch and a service engine soon light to your XFI system.
FAST flash harnesses are pre-built harnesses offer added functionality of your XFI system. These fuel injection harnesses have flash adapter connectors for XFI ECU connection and allow you to add a calibration switch and a service engine soon light to your XFI system.