Engine Management Systems

Engine Management Systems, Dominator EFI, ECU, Up to 24-Injectors, 12-Coil, Digital/Analog Input, Drive-by-Wire, VVT, Trans Control, 4L60E/4L80E, Each

Part Number: HLY-554-114

4.17 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Engine Management Systems, Nexus R3 with Universal Wire-In Harness Kits, Transmission Controller, Kit

Part Number: HTH-HT-193200

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Engine Management Systems, Coyote , Gen 4X, 10R80 Automatic Transmission Controller, Air Box, Radiator Hoses, Power Distribution Module, Ford, Kit

Part Number: FMS-M-6017-M50HA

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Engine Management System, MicroSquirt, 4 Digital Inputs, 7 Analog Inputs, Kit

Part Number: DIY-MICROSQUIRT8

3.8 out of 5 stars ( 5 )

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Engine Management Systems, HP EFI, ECU, Replacement, Plug-and-Play, 16-Injectors, Eight Coils, Analog Inputs, USB Cable, Software, Each

Part Number: HLY-554-113

3.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, for GM TPI, Holley Stealth Ram, Kit

Part Number: HLY-550-601

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Engine Management Systems, Crate Engine Control Packs, Oxygen Sensor, Ford, 2.3L, Kit

Part Number: FMS-M-6017-23T

5.0 out of 5 stars ( 1 )

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Engine Management Systems, Coyote , Gen 4X, Manual Transmission Controller, Air Box, Radiator Hoses, Power Distribution Module, Ford, Kit

Part Number: FMS-M-6017-M50HM

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Engine Management Systems, Elite 1500 ECU, Four Digital Inputs, Ten Analog Inputs, Each

Part Number: HTH-HT-150900

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Engine Management System, Godzilla 7X, PCM, Air Cleaner Assembly, Sensors, Accelerator Pedal, Manual Transmission, Ford, Kit

Part Number: FMS-M-6017-73M

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Engine Management Systems, Dominator EFI, Lightweight ECU, Up to 24-Injectors, 12-Coils, Digital/Analog Input, Drive-by-Wire, VVT, Trans Control, Each

Part Number: HLY-554-114LW

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NKT O2, GM, LS2, LS7, 58x Crank Sensor, Kit

Part Number: HLY-550-603N

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Performance Tuner/Programmer

Part Number: FMS-M-6017-M52SC

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Universal, MPFI, Kit

Part Number: HLY-550-604

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NTK O2, Wideband, Universal, Un-terminated, Kit

Part Number: HLY-550-605N

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Engine Management Systems, Elite 2500 ECU with Plug and Pin Set, Kit

Part Number: HTH-HT-151301

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Engine Management System, EZ-EFI Self-Tuning, EZ-EFI 4 Injector Throttle Body, ECU, Wiring Harness, Kit

Part Number: FST-304001

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Estimated Ship Date: Mar 2, 2026 if ordered today

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NTK O2, Wideband, CANBUS, Ford, Multi-Point, Kit

Part Number: HLY-550-606N

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 15, 2026 if ordered today

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Universal, Un-terminated, Kit

Part Number: HLY-550-605

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Estimated Ship Date: Jan 15, 2026 if ordered today

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Engine Management Systems, Terminator EFI, Module, Replacement, Self-Tune, Controls 8-Injectors, 8-Coils, Four Analog Inputs, Wideband, CANBUS, Each

Part Number: HLY-554-119

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Estimated Ship Date: Jan 15, 2026 if ordered today

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Fuel Injection Engine Management System, Pro-Flo 4, Self-Learning, Sequential Multi-Port, LS Gen III 24X, Engine Swap, Kit

Part Number: EDL-35711

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NKT O2 Sensor, GM, LS, 24x Crank Sensor, Kit

Part Number: HLY-550-602N

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, NTK O2, Wideband, CANBUS, Universal, MPFI, Kit

Part Number: HLY-550-604N

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Estimated Ship Date: Jan 15, 2026 if ordered today

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Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, GM, LS2, LS3, LS7, Bosch O2, Kit

Part Number: HLY-550-607

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Estimated Ship Date: Jan 15, 2026 if ordered today

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ECU, Fast XFI, Fuel Injection, with Data Logging, Kit

Part Number: FST-301003

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 2, 2026 if ordered today

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