Performance Parts

Take control of your LS engine with Terminator X! Don't settle for a junkyard 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...

Take control of your LS engine with Terminator X. Don't settle for a junkyard 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...

Take control of your LS engine with Terminator X! Don't settle for a junkyard 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...

Take control of your LS engine with Terminator X! Don't settle for a junkyard 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...

Take control of your GM Gen V LT4, LT1, L83, or L86 engine with Terminator X! Do not 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-...

Take control of your GM Gen V LT1, L83, or L86 engine with Terminator X! Do not 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-winni...

Take control of your GM Gen V LT1, L83, or L86 engine with Terminator X! Do not 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-winni...

Take control of your LS engine with Terminator X! Don't settle for a junkyard 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...

Take control of your LS engine with Terminator X! Don't settle for a junkyard 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...

Take control of your LS engine with Terminator X! Don't settle for a junkyard 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...

Take control of your LS engine with Terminator X. Don't settle for a junkyard 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...

Take control of your LS engine with Terminator X! Don't settle for a junkyard 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...

Take control of your LS engine with Terminator X. Don't settle for a junkyard 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...

Take control of your 302ci Small Block Ford engine in your Fox Body Mustang with Holley EFI Terminator X system. Don't settle for the factory ECU with a cumbersome tuning interface or pre-programmed tuning chip when you can have complete control o...

GM GEN V LTx DBW Harness. Compatible with GM part number 12617792 (L83), and 12678223 (L86, LT1, LT4).Specs: Brand: Holley EFI Category: Electrical, Lighting and Body Emission Code: 4 Harness Application: GM, LT Harness Type: Drive-By-Wire ...

Terminator X and X Max Coyote systems supports Ford Coyote platform with Ti-VCT.Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 programmable inputs and outputs. These are ideal for ele...

Terminator X and X Max Coyote systems supports Ford Coyote platform with Ti-VCT.Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 programmable inputs and outputs. These are ideal for ele...

Terminator X and X Max Coyote systems supports Ford Coyote platform with Ti-VCT.Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 programmable inputs and outputs. These are ideal for ele...

Terminator X and X Max Coyote systems supports Ford Coyote platform with Ti-VCT.Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 programmable inputs and outputs. These are ideal for ele...

Terminator X and X Max Coyote systems supports Ford Coyote platform with Ti-VCT.Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 programmable inputs and outputs. These are ideal for ele...

Terminator X and X Max Coyote systems supports Ford Coyote platform with Ti-VCT.Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 programmable inputs and outputs. These are ideal for ele...

Introducing Terminator X for Chrysler GEN III HEMI engines from 2003-2013+ such as the 5.7L, 6.1L and 6.4L engines. (Non-VVT only)Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 progra...

Introducing Terminator X for Chrysler GEN III HEMI engines from 2003-2013+ such as the 5.7L, 6.1L and 6.4L engines. (Non-VVT only)Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 progra...

Introducing Terminator for Chrysler GEN III HEMI engines from 2003-2013+ such as the 5.7L, 6.1L and 6.4L engines. (Non-VVT only)Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 programm...