The Holley Terminator X Bluetooth module is a plug-and-play device that connects to the ECU’s CAN bus port, allowing wireless communication between the Terminator X EFI system and the Holley EFI Mobile app on a smartphone or tablet. Once plugged in, the module draws power from the ECU, and pairing is done through the phone’s Bluetooth settings—often with a code provided in the instructions. Using the Holley EFI Mobile app, drivers can monitor live engine data such as RPM, temperatures, AFR, MAP, and throttle position, as well as log data directly to their device. While it’s not a full replacement for laptop-based tuning, the Bluetooth module makes it easy to check performance, record logs, and make certain basic adjustments without being tethered to a PC. This in-depth video takes you through the setup process, walks you through the wizard, and shows you all the hard-hitting new features the Bluetooth module has to offer.