Standalone Engine Management, at a budget price. Plug and Play with LS1 - LQ4 - LQ9 - L33, or any other Junkyard LS Hero, or Crate Engine!

Terminator X and Terminator X Max. Two powertrain management systems from Holley that offer plug and play control for most LS engines starting at just $999. Why settle for a junkyard ECU with a cumbersome aftermarket tuning interface when you can get complete control of your engine, self-learning fuel strategies and the proven, race winning technology of Holley EFI for under a grand!