Terminator X MAX users, unlock the full potential of your GM 6L80/6L90e 6-speed transmission with Holley EFI’s Transmission Controller. Using Terminator X MAX along with our Holley EFI Transmission Harness and handheld, you can control GM’s 6 Speed transmissions in addition to complete engine control. It features an easy to use interface that lets you raise and lower shift points, make changes for tire size and gear ratio, as well as read error codes from the transmission directly. We also suppo

Holley’s Terminator X and Terminator X Max ECUs are affordable, easy-to-use, standalone engine management systems for the Ford Coyote engine. They feature extremely simple plug-and-play designs using factory connectors to make installation quick and easy. Follow along in the video above as we walk you through a step-by-step installation of a Terminator X Max ECU on a Ford Coyote engine. 0:36 - Terminator X and X Max for Coyote Engines Overview 1:55 – Terminator X Max Engine Harness Installation