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550-904 | TERMINATOR X MPFI, 4.8-6.0 EARLY TRUCKclose
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 EFI at a budget-friendly price! Terminator X features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 progr..
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550-917 | TERMINATOR X MAX MPFI W/TRANS CONTROLclose
Take control of your LS engine with Terminator X Max! 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 EFI at a budget-friendly price! Terminator X Max features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and..
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550-918 | TERMINATOR X MAX MPFI W/TRANS CONTROLclose
Take control of your LS engine with Terminator X Max! 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 EFI at a budget-friendly price! Terminator X Max features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and..
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550-927 | TERMINATOR X MAX MPFI W/TRANS & DBWclose
Take control of your LS engine with Terminator X Max! 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 EFI at a budget-friendly price! Terminator X Max features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and..
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550-928 | TERMINATOR X MAX MPFI W/TRANS & DBWclose
Take control of your LS engine with Terminator X Max! 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 EFI at a budget-friendly price! Terminator X Max features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and..
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550-930 | TERMINATOR X MAX MPFI W/DBWclose
Take control of your LS engine with Terminator X Max! 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 EFI at a budget-friendly price! Terminator X Max features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and..
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550-931 | TERMINATOR X MAX MPFI W/DBWclose
Take control of your LS engine with Terminator X Max! 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 EFI at a budget-friendly price! Terminator X Max features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and..
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554-119 | HOLLEY EFI TERMINATOR ECUclose
An EFI System so easy and powerful you'll think it's alive! Simply bolt it on, feed it a few basic answers and let Terminator EFI take control of your ride! Features:ECU onlyEasy to installNo computer experience requiredSimple multiple choice set–up wizardSelf–tunes while you driveUpgradable to complete laptop control without buying another ECUBrandHolley EFIEmission Code4Product TypeTerminator EC..
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554-120 | MAP SENSOR, TERMINATOR 1 BARclose
Replacement 1 bar MAP sensor for Terminator EFI.BrandHolley EFIEmission Code5Product TypeMAP SensorPart Number554-120..
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554-121 | AIR TEMP SENSOR, TERMINATORclose
Replacement Air Temperature Sensor for Terminator EFI.BrandHolley EFIEmission Code5Product TypeTemperature SensorPart Number554-121..
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558-121 | 2X4 TERMINATOR STEALTH MAIN HARNESSclose
Introducing 2x4 Terminator Stealth EFI upgrade components. The wait is over. These upgrade components allow you to use your current Terminator Stealth EFI throttle body, install a new main harness, and slave throttle body, and you are finished. This upgrade is also perfect for anyone wanting to convert their 2x4 supercharged combo over to Electronic Fuel Injection!Features:2x4 Side Mount Stealth T..
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558-414 | HARNESS, TERMINATOR MAINclose
Replacement main wiring harness for Terminator EFI kits 550-405 and 550-406.BrandHolley EFIEmission Code3Product TypeTerminator TBI Main Engine HarnessPart Number558-414..
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558-415 | SUB-HARNESS, TERMINATORclose
Replacement throttle body wiring harness for Terminator EFI kits 550-405 and 550-406.BrandHolley EFIEmission Code3Product TypeTerminator Throttle Body HarnessPart Number558-415..
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558-420 | TERMINATOR EFI I/O KITclose
PN 558-420 contains 5 extra input/output wires that the base Terminator EFI harness does not contain. It contains Input wires for Inputs 1-4. It contains one wire for Output 2. These inputs and outputs can perform features and functions that must be programmed via Holley EFI laptop software. The software also contains instructions on how to program these.BrandHolley EFIEmission Code5Harness TypeAu..
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558-439 | TERMINATOR 205 LB/HR INJECTOR HARNESSclose
Injector upgrade harness for Terminator Throttle Body Systems. This harness is designed to be plug and play with our 205 lb/hr injector upgrade kit, Part Number 522-205. BrandHolley EFIEmission Code4Product TypeTerminator Throttle Body HarnessPart Number558-439..
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558-442 | STEALTH TERMINATOR 2X4 SUB HARNESSclose
Introducing 2x4 Terminator Stealth EFI upgrade components. The wait is over. These upgrade components allow you to use your current Terminator Stealth EFI throttle body, install a new main harness, and slave throttle body, and you are finished. This upgrade is also perfect for anyone wanting to convert their 2x4 supercharged combo over to Electronic Fuel Injection!Features:2x4 Side Mount Stealth T..
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