Holley Chevy Street Engine Control Modules

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$282 Off

Holley |

#425550659

Holley 550-659 Dominator EFI Kit, LS2 Main Harness, GM, EV1

Data Acquisition Replacement Component Type:

Dominator ECU - ECM - VCM

Sold in Quantity:

Kit

$3,599.95

/kit

$3,881.95

$138 Off

Holley |

#425550917

Holley 550-917 Terminator X Max Early Truck Engine MPFI Kit

(3)

Ignition Type:

Factory GM

Injector Connector:

Multec 2

Tuner Style:

Touchscreen Handheld

$1,999.95

/each

$2,137.95

-5%

Holley |

#425550905

Holley 550-905 Terminator X LS2/LS3 MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$1,599.95

/each

$1,687.95

-5%

Holley |

#425550904

Holley 550-904 Terminator X Early Truck LS MPFI Kit

(3)

Ignition Type:

Factory GM

Injector Connector:

Multec 2

Tuner Style:

Touchscreen Handheld

$1,599.95

/each

$1,687.95

$125 Off

Holley |

#425550904T

Holley 550-904T Terminator X Early Truck Engine MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

Multec 2

Tuner Style:

USB/CAN Tuning Cable

$1,449.95

/each

$1,574.95

Choosing an Electronic Fuel Injection Retrofit for Your Street Rod or Muscle Car

Fuel injection is here to stay and we delve into the benefits of such retrofit systems for your classic muscle car or street rod in our EFI retrofit buyer's guide!

5.7 LS1 Engine Upgrades: Build Recipes for 400 HP-700+ HP

While everyone is looking for a 6.0 LS, don’t count out the original 5.7 LS1 engine for your next LS swap performance build

Vortec 4.8 LS Build: Horsepower Recipes, Specs, & Upgrades

The 4.8 LS engine is a salvage yard bargain vs the typical 5.3 or 6.0 LS and can still make great power for your LS swap needs.

6.0 LS Build Combinations: Recipes for 500-1,000 HP

Making great horsepower on a budget is the LS engine family’s claim to fame, but just like any other engine, the more power you ask of it the more you’ll need to spend.

Engine Cylinder Numbers

Upgrading the Cooling System for a Small Block Chevy

Learn how to successfully upgrade the cooling system for a 400 small block Chevy. Read tips for installing a water pump and auxiliary coolant lines using fittings and fuel hoses.

Car Cooling System Components

How does a cooling system work? Why is your engine overheating? What parts should you be giving your attention to? This guide answers all your questions.

Carbureted LS Engine Guide How to Carb an LS | Build Recipe

Thinking about a carbureted LS? Learn how LS carb conversions work, what parts you'll need, and how carb vs. EFI compares for power and drivability.

-5%

Holley |

#425550903

Holley 550-903 Terminator X LS1/LS6 MPFI Kit

(2)

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,599.95

/each

$1,687.95

$138 Off

Holley |

#425550918

Holley 550-918 Terminator X Max LS2/LS3 MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$1,999.95

/each

$2,137.95

$138 Off

Holley |

#425550919

Holley 550-919 Terminator X Max 24X/1X EV6 LS MPFI Trans Control

(1)

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$1,999.95

/kit

$2,137.95

$138 Off

Holley |

#425550916

Holley 550-916 Terminator X Max LS1/LS6 MPFI Kit

(3)

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,999.95

/each

$2,137.95

$275 Off

Holley |

#4255501631

Holley 550-1631 Terminator X Max Late LT, Trans Control DBW

Ignition Type:

Factory GM

Tuner Style:

Touchscreen Handheld

Throttle Style:

Drive-By-Wire

$3,549.95

/kit

$3,824.95

$163 Off

Holley |

#425550928

Holley 550-928 Terminator X Max LS2/LS3 MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$2,199.95

/each

$2,362.95

-5%

Holley |

#425550937

Holley 550-937 Terminator X Ford MPFI Kit

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

Throttle Style:

Cable Driven

$1,599.95

/kit

$1,687.95

$200 Off

Holley |

#425554114

Holley 554-114 Dominator EFI ECU

Ignition Type:

Universal

GTIN Code:

090127665794

Sold in Quantity:

Each

$2,499.95

/each

$2,699.95

-5%

Holley |

#425550936

Holley 550-936 Terminator X Universal MPFI Kit

Ignition Type:

Universal

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,599.95

/kit

$1,687.95

$210 Off

Holley |

#425550628

Holley 550-628 Ford Coyote Ti-VCT Capable HP EFI Kit, Bosch O2

Ignition Type:

Ford Coyote

Injector Connector:

USCAR (EV6)

Tuner Style:

USB/CAN Tuning Cable

$2,849.95

/each

$3,059.95

$187 Off

Holley |

#425550604

Holley 550-604 HP EFI ECU & Harness Kit, Universal, Bosch O2

Ignition Type:

Universal

Injector Connector:

Jetronic / Minitimer (EV1)

Sold in Quantity:

Kit

$2,749.95

/each

$2,936.95

$188 Off

Holley |

#4255501317

Holley 550-1317 Terminator X Max, Ford Modular 2V, EV6 Injectors

Ignition Type:

Ford 2V Mod Stock Coils

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$2,399.95

/kit

$2,587.95

Ignition Type:

Ford 2V Mod Stock Coils

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$2,399.95

/kit

$2,587.95

Showing 1 - 36 of 100 results

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Holley Chevy Street Engine Control Modules

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Products

Holley 550-659 Dominator EFI Kit, LS2 Main Harness, GM, EV1

Holley 550-917 Terminator X Max Early Truck Engine MPFI Kit

Holley 550-905 Terminator X LS2/LS3 MPFI Kit

Holley 550-904 Terminator X Early Truck LS MPFI Kit

Holley 550-904T Terminator X Early Truck Engine MPFI Kit

Related Articles

Holley 550-903 Terminator X LS1/LS6 MPFI Kit

Holley 550-918 Terminator X Max LS2/LS3 MPFI Kit

Holley 550-919 Terminator X Max 24X/1X EV6 LS MPFI Trans Control

Holley 550-916 Terminator X Max LS1/LS6 MPFI Kit

Holley 550-1631 Terminator X Max Late LT, Trans Control DBW

Holley 550-928 Terminator X Max LS2/LS3 MPFI Kit

Holley 550-937 Terminator X Ford MPFI Kit

Holley 554-114 Dominator EFI ECU

Holley 550-936 Terminator X Universal MPFI Kit

Holley 550-628 Ford Coyote Ti-VCT Capable HP EFI Kit, Bosch O2

Holley 550-604 HP EFI ECU & Harness Kit, Universal, Bosch O2

Holley 550-1317 Terminator X Max, Ford Modular 2V, EV6 Injectors

Holley 550-903 Terminator X LS1/LS6 MPFI Kit w/Pigtail/CAN Cable

Holley 550-909 Terminator X 24X/1X EV6 LS1/LS6 MPFI Kit

Holley 550-942 Terminator X Max Universal MPFI Kit

Holley 550-927 Terminator X Max Early Truck Engine MPFI Kit

Holley 550-931 Terminator X Max LS2/LS3 MPFI Kit

Holley 550-607 HP EFI ECU & Harness Kit, LS2/LS3/LS7, Bosch O2

Holley 550-1601 Terminator X GM Gen V Late LT Kit

Holley 550-934 Terminator X Max 24X/1X EV6 LS MPFI Kit, DBW

Holley 550-929 Terminator X Max LS1/LS6 MPFI Kit

Holley 550-1218 Terminator X, Ford Modular 4V, EV1 Injectors

Holley 550-602 HP EFI ECU & Harness Kit, LS1/LS6, Bosch O2

Holley 550-920 Terminator X Max 58X/4X EV1 LS MPFI Kit

Holley 550-601 HP EFI ECU & Harness Kit, GM TPI, Bosch O2

Holley 550-909T Terminator X 24X/1X EV1 LS MPFI Kit

Holley 550-903T Terminator X LS1 MPFI Kit

Holley 550-927T Terminator X Max Early Truck Engine MPFI Kit

Holley 550-1225 Terminator X, 2007-13 Gen III Hemi, EV6 Injectors

Holley 550-910 Terminator X 58X/4X EV1 LS MPFI Kit

Holley 550-1316 Terminator X Max, Ford Modular 2V, EV1 Injectors

Models: