Engine Management Systems

PRO FLO 4 STANDALONE ECU AND HARNESS KIT

Part Number: EDL-35721

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, Wideband, CANBUS, Chevy, LS, 5.7L, Kit

Part Number: HLY-550-602

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Bosch O2 Sensor, Wideband, CANBUS, Ford, 4.6L, Kit

Part Number: HLY-550-628

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: HTH-HT-151301

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Management Systems, Terminator X MAX, 8-EV1 Injectors, 8-Coil, Trans Control, Sensors, USB Tune Cable, Chevy, LS, 5.7L, 1x Cam, 24x Crank, Kit

Part Number: HLY-550-926T

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

PRO FLO 4 EFI ECU AND ELECTRONICS KIT, FORD 351W

Part Number: EDL-35718

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

PRO FLO 4 EFI ECU AND ELECTRONICS KIT, CHEVROLET SB, BB

Part Number: EDL-35716

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

MODULE KIT

Part Number: NAL-19433248

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Management System, LT4, 8-Speed, Kit

Part Number: NAL-19419242

Not Yet Reviewed

Estimated Ship Date: Jul 21, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Bosch O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 5.0L, Kit

Part Number: HLY-550-619

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Management Systems, HP EFI, ECU and Harness, Connects 16-Injectors, 8-Coils, Bosch O2, Wideband, Ford, Lincoln, Mercury, 2V, 4.6L, 5.4L, Kit

Part Number: HLY-550-616

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Bosch O2 Sensor, Wideband, CANBUS, Ford, 4-valve, 4.6L, 5.4L, Kit

Part Number: HLY-550-617

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Management Systems, Dominator EFI, 24-EV1 Injectors, 12-Coils, Analog/Digital, Drive-by-wire, 4x Cam Sensor, Chevy, 4.8-7.0L, 58x Crank, Kit

Part Number: HLY-550-659

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, O2 Sensor, for GM TPI, Holley Stealth Ram, Kit

Part Number: HLY-550-601N

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Control Unit, Elite 2500, with Premium Wire-In Harness, Universal, Kit

Part Number: HTH-HT-151304

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Management Systems, Nexus R3 ECU, Transmission Controller, Each

Part Number: HTH-HT-193000

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Management System, LS7 Engine Controller, Chevy, 7.0L, Kit

Part Number: NAL-19354334

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Management System, LS 376/525 HP Engine Controller, Chevy, Kit

Part Number: NAL-19540149

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

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

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Control System, XFI Sportsman EFI, ECU, Wiring Harness, Wide-band O2 Sensor, Kit

Part Number: FST-303000

3.4 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Management System, LS427/570 Controller Kit, Pre-Programmed Controller, Harness, Pedal Assembly, Oxygen Sensors, Chevrolet, Kit

Part Number: NAL-19420000

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

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: Tomorrow

• Free Shipping

Engine Management Systems, Terminator X, Up to 8-EV1 Injectors, 8-Coils, Analog, O2 Sensor, Plug-and-Play, USB Tuning Cable, Ford, 4.6L, 5.4L, Kit

Part Number: HLY-550-1220

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Management Systems, Terminator X, Up to 8-EV6 Injectors, 8-Coils, Analog, O2 Sensor, Plug-and-Play, USB Tuning Cable, Ford, 4.6L, 5.4L, Kit

Part Number: HLY-550-1221

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping