Why settle for a factory ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies, and the proven, race-winning technology of Holley EFI at a budget-friendly price?

With Holley's Terminator X GM GDI controllers, you can take control of your GM Gen V LT4, LT1, L83, or L86 engine. They feature real-time fuel learn, an integrated 1bar MAP sensor, and four programmable inputs and outputs that are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. Whether you're building an LT-swapped budget beater or a boosted racecar, Holley EFI Terminator X GM GDI controllers have the features and technology you need at a price that won't break the bank.

Features and notes:

* Terminator X comes fully loaded with base maps for common LT engine combinations
* 3.5 in. touch screen LCD handheld:
-- Easy-to-use calibration wizard
-- Tuning and gauge display functions
* External gasoline direct injection controller, enables control and tune of factory injectors, GM Gen V LT Variable Valve Timing (VVT), and factory fuel pumps
* Holley EFI industry-leading, easy-to-use software suite that allows full laptop access for advanced users
* Plug-and-play GM Gen V LT engine GDI and VVT controller--ONLY compatible with Terminator X or X MAX ECUs.

Note: To identify if your engine is an early or late application, refer to your fuel pressure sensor, located behind the intake manifold. Early sensors have a 4-pin connector, whereas late sensors have a 3-pin connector. This will help you pick which kit you require for your engine.