Take control of your LS with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control, self-learning fuel strategies and the proven, race-winning technology of Holley EFI. Terminator X Max features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs that are ideal for electric fans, boost control solenoids, progressive nitrous control, and more. Part number 550-928 also has 4L60E or 4L80E Transmission control and Drive-By Wire Throttle Body control. It comes fully loaded with base maps for common LS engine combinations to get you out of the garage and on the road/track fast. The 3.5" touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you’re building a budget beater or race car, this has the technology you need.