The Edelbrock TC Transmission Controller for Pro-Flo 4/4+ EFI Applications #36212 is a standalone transmission controller designed to work with Edelbrock Pro-Flo 4 and Pro-Flo 4+ EFI systems. It provides transmission control over shift points, shift firmness, shift speed, torque converter lock-up, shift table, line pressure, speed calibration and more. It supports GM 4L60E, 4L70E, 4L75E, (up to 2010), 4L80E (post-1994). Compatible with most iOS and Android mobile devices, the TC Transmission Controller is supported by an iOS Apple/Android “TC Tuner” app that communicates via Bluetooth communication between your device and the transmission controller, providing a simplified and intuitive user interface for setup, calibrating, and monitoring data. The TC Tuner includes a Setup Wizard with base tuning calibrations to further simplify user functionality. No software, laptop or tuning experience is required. The TC Tuner app can be downloaded for free from the iOS and Google Play stores, and upgrades/updates will also be available. Kits will include the TC Transmission Controller and clearly labeled auxiliary harnesses to provide a simplified installation. The system is essentially “plug-and-play” with capabilities for fully customizable performance. The compact housing of the unit is highly water resistant and dust proof and is simply to mount in the location of your choice.