Holley Hot Rod Engine Control Modules

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$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

$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

-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

$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

$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

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!

Complete Guide to Cowl Steering Box Conversion for Hot Rods

Cowl steering is a racecar-inspired steering configuration for your hot rod that can solve a lot of problems. Here's how to do it.

New Hubs for a Traditional-Style Hot Rod

Tim talks about the process of upgrading the factory hubs on his 1929 Roadster project with new manufacture units courtesy of Speedway Motors.

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.

Ford And Chevy Spindle Options For Solid Axle Hot Rods

Dive into some of the history and unique differences between Ford and Chevy spindles for solid front axles and what will perform best on your hot rod.

Modifying Axles to Lower a Hot Rod

Learn how to lower a hot rod by modifying the axles and some history behind early hop ups. This project features a Ford axle with wishbones for a Model A.

Hot Rod Horns and Whistles

If you're going to buy a horn isn't it nice to know what it sounds like first? That's why Speedway produced a helpful video to hear the differences in the unique horns that we offer.

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

Speedway Tech Talk - Hot Rod Aluminum Radiators

Tim talks about a few aluminum radiators we have to offer.

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.

$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

$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 |

#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

$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 |

#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

$163 Off

Holley |

#425550927

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

Ignition Type:

Factory GM

Injector Connector:

Multec 2

Tuner Style:

Touchscreen Handheld

$2,199.95

/each

$2,362.95

$163 Off

Holley |

#425550934

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

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$2,199.95

/kit

$2,362.95

-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

-5%

Holley |

#425550909

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

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$1,599.95

/kit

$1,687.95

$132 Off

Holley |

#425550916T

Holley 550-916T Terminator X Max LS1 MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

USB/CAN Tuning Cable

$1,949.95

/each

$2,081.95

$138 Off

Holley |

#425550929

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

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,999.95

/each

$2,137.95

$275 Off

Holley |

#4255501630

Holley 550-1630 Terminator X Max Early LT, Trans Control DBW

Ignition Type:

Factory GM

Tuner Style:

Touchscreen Handheld

Throttle Style:

Drive-By-Wire

$3,549.95

/kit

$3,824.95

$138 Off

Holley |

#425550942

Holley 550-942 Terminator X Max Universal MPFI Kit

Ignition Type:

Universal

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,999.95

/kit

$2,137.95

$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

$132 Off

Holley |

#425550918T

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

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

USB/CAN Tuning Cable

$1,949.95

/each

$2,081.95

-5%

Holley |

#425550910

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

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,599.95

/kit

$1,687.95

$144 Off

Holley |

#4255501221

Holley 550-1221 Terminator X, Ford Mod 2V or 4V, Smart Coils, EV6

Ignition Type:

Holley Smart Coils

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$2,049.95

/kit

$2,193.95

$138 Off

Holley |

#425550931

Holley 550-931 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

$210 Off

Holley |

#425550602

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

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

USB/CAN Tuning Cable

$2,849.95

/each

$3,059.95

$269 Off

Holley |

#4255501409

Holley 550-1409 Terminator X Max, 11-12 Coyote Ti-VCT, EV6, DBW

Ignition Type:

Ford Coyote

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$3,499.95

/kit

$3,768.95

$242 Off

Holley |

#425550602N

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

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

USB/CAN Tuning Cable

$3,099.95

/each

$3,341.95

$244 Off

Holley |

#4255501620

Holley 550-1620 Terminator X Max GM Early LT, Drive-by-Wire

Ignition Type:

Factory GM

Tuner Style:

Touchscreen Handheld

Throttle Style:

Drive-By-Wire

$3,299.95

/kit

$3,543.95

$210 Off

Holley |

#425550607

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

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

USB/CAN Tuning Cable

$2,849.95

/each

$3,059.95

$210 Off

Holley |

#425550603

Holley 550-603 HP EFI ECU & Harness Kit, LS2/LS3/LS7, Bosch O2

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

USB/CAN Tuning Cable

$2,849.95

/each

$3,059.95

$125 Off

Holley |

#425550909T

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

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

USB/CAN Tuning Cable

$1,449.95

/kit

$1,574.95

$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

$132 Off

Holley |

#425550931T

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

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

USB/CAN Tuning Cable

$1,949.95

/each

$2,081.95

$157 Off

Holley |

#425550928T

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

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

USB/CAN Tuning Cable

$2,149.95

/each

$2,306.95

$138 Off

Holley |

#425550920

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

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,999.95

/kit

$2,137.95

-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

$138 Off

Holley |

#425550932

Holley 550-932 Terminator X Max 24X/1X EV6 LS MPFI Kit, DBW

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$1,999.95

/kit

$2,137.95

Showing 1 - 36 of 100 results

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Holley Hot Rod Engine Control Modules

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Products

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

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

Holley 550-904 Terminator X Early Truck LS MPFI Kit

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

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

Related Articles

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

Holley 554-114 Dominator EFI ECU

Holley 550-903 Terminator X LS1/LS6 MPFI Kit

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

Holley 550-905 Terminator X LS2/LS3 MPFI Kit

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

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

Holley 550-936 Terminator X Universal MPFI Kit

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

Holley 550-916T Terminator X Max LS1 MPFI Kit

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

Holley 550-1630 Terminator X Max Early LT, Trans Control DBW

Holley 550-942 Terminator X Max Universal MPFI Kit

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

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

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

Holley 550-1221 Terminator X, Ford Mod 2V or 4V, Smart Coils, EV6

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

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

Holley 550-1409 Terminator X Max, 11-12 Coyote Ti-VCT, EV6, DBW

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

Holley 550-1620 Terminator X Max GM Early LT, Drive-by-Wire

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

Holley 550-603 HP EFI ECU & Harness Kit, LS2/LS3/LS7, Bosch O2

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

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

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

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

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

Holley 550-937 Terminator X Ford MPFI Kit

Holley 550-932 Terminator X Max 24X/1X EV6 LS MPFI Kit, DBW

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