Now you can upgrade your original Edelbrock Pro-Flo electronics to our all new and more powerful Pro-Flo 2 EFI system. These kits include all of the necessary components to upgrade an Edelbrock first-generation Pro-Flo fuel injection system to the all new second-generation Pro-Flo 2. Each kit contains: flash programmable control unit (ECU), USB to serial port adapter, oxygen sensor (narrow band), complete wiring harness, AC power adapter, exclusive handheld Calibration Module, calibration module cord adapter, MAP sensor, software CD, firewall wiring harness grommet, complete installation instructions and all the necessary hardware for a hassle free installation.