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EFI / Electronic Fuel Injection Systems

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EFI / Electronic Fuel Injection Systems

Take a technological leap forward with a new electronic fuel injection system from Summit Racing. We carry many EFI systems—many self-tuning and self-learning—from...

Take a technological leap forward with a new electronic fuel injection system from Summit Racing. We carry many EFI systems—many self-tuning and self-learning—from the top players in engine performance, including MSD Ignition, Edelbrock, Holley, FAST, ACCEL, Chevrolet Performance, Quick Fuel, and more. Maximize the power, efficiency, and performance of your engine with a new electronic fuel injection system right for your application. Choose your EFI system now at Summit Racing!

Take a technological leap forward with a new electronic fuel injection system from Summit Racing. We carry many EFI systems—many self-tuning and self-learning—from the top players in engine performance, including MSD Ignition, Edelbrock, Holley, FAST, ACCEL, Chevrolet Performance, Quick Fuel, and more. Maximize the power, efficiency, and performance of your engine with a new electronic fuel injection system right for your application. Choose your EFI system now at Summit Racing!

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Holley Super Sniper EFI Stealth 4150 Fuel Injection Systems 550-877

Holley Super Sniper EFI Stealth 4150 Fuel Injection Systems 550-877

Holley Super Sniper EFI Stealth 4150 Fuel Injection Systems 550-877

Fuel Injection Systems, Sniper EFI, Stealth 4150, 1250 HP Max, Throttle Body, Black, 4150 Flange, Injectors, Wiring Harness, Tuner, Kit

Part Number: SNE-550-877

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-870K

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-870K

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-870K

Fuel Injection Systems, Sniper EFI, Stealth 4150, 650HP Max, Throttle Body, Shiny, 4150 Flange, Injectors, Fuel Pump, Regulator, Harness, Tuner, Kit

Part Number: SNE-550-870K

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Holley Terminator X Max Stealth 4150 EFI Fuel Injection Systems 550-1012

Holley Terminator X Max Stealth 4150 EFI Fuel Injection Systems 550-1012

Holley Terminator X Max Stealth 4150 EFI Fuel Injection Systems 550-1012

Fuel Injection Systems, Terminator X Max, Stealth 4150 EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Black, Tunable, Trans Control, Kit

Part Number: HLY-550-1012

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Holley Terminator X Stealth 4150 EFI Fuel Injection Systems 550-1005

Holley Terminator X Stealth 4150 EFI Fuel Injection Systems 550-1005

Holley Terminator X Stealth 4150 EFI Fuel Injection Systems 550-1005

Fuel Injection Systems, Terminator X, Stealth 4150 EFI, Eight Injectors, Throttle Body, Speed Density, Aluminum, Black, Tunable, Kit

Part Number: HLY-550-1005

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-871

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-871

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-871

Fuel Injection Systems, Sniper EFI, Stealth 4150, 650 HP Max, Throttle Body, Black, 4150 Flange, Injectors, Wiring Harness, Tuner, Kit

Part Number: SNE-550-871

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-872K

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-872K

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-872K

Fuel Injection Systems, Sniper EFI, Stealth 4150, 650 HP Max, Throttle Body, Gold, 4150 Flange, Injectors, Fuel Pump, Regulator, Harness, Tuner, Kit

Part Number: SNE-550-872K

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-870

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-870

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-870

Fuel Injection Systems, Sniper EFI, Stealth 4150, 650 HP Max, Throttle Body, Polished, 4150 Flange, Injectors, Wiring Harness, Tuner, Kit

Part Number: SNE-550-870

4.44 out of 5 stars ( 9 )

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-872

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-872

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-872

Fuel Injection Systems, Sniper EFI, Stealth 4150, 650 HP Max, Throttle Body, Gold, 4150 Flange, Injectors, Wiring Harness, Tuner, Kit

Part Number: SNE-550-872

3.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X Stealth 4150 2X4 EFI Fuel Injection Systems 550-1074

Holley Terminator X Stealth 4150 2X4 EFI Fuel Injection Systems 550-1074

Holley Terminator X Stealth 4150 2X4 EFI Fuel Injection Systems 550-1074

Fuel Injection Systems, Terminator X, Stealth 4150, 2x4 EFI, Eight Injector, Dual Throttle Body, Speed Density, Aluminum, Shiny, Tunable, Kit

Part Number: HLY-550-1074

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X Stealth 4150 EFI Fuel Injection Systems 550-1002

Holley Terminator X Stealth 4150 EFI Fuel Injection Systems 550-1002

Holley Terminator X Stealth 4150 EFI Fuel Injection Systems 550-1002

Fuel Injection Systems, Terminator X, Stealth 4150 EFI, Four Injectors, Throttle Body, Speed Density, Aluminum, Black, Tunable, Kit

Part Number: HLY-550-1002

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X Max Stealth 4150 EFI Fuel Injection Systems 550-1013

Holley Terminator X Max Stealth 4150 EFI Fuel Injection Systems 550-1013

Holley Terminator X Max Stealth 4150 EFI Fuel Injection Systems 550-1013

Fuel Injection Systems, Terminator X Max, Stealth 4150 EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Gold, Tunable, Trans Control, Kit

Part Number: HLY-550-1013

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X Max Stealth 4150 EFI Fuel Injection Systems 550-1011

Holley Terminator X Max Stealth 4150 EFI Fuel Injection Systems 550-1011

Holley Terminator X Max Stealth 4150 EFI Fuel Injection Systems 550-1011

Fuel Injection Systems, Terminator X Max, Stealth 4150 EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Shiny, Tunable, Trans Control, Kit

Part Number: HLY-550-1011

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-871K

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-871K

Holley Sniper EFI Stealth 4150 Fuel Injection Systems 550-871K

Fuel Injection Systems, Sniper EFI, Stealth 4150, 650 HP Max, Throttle Body, Black, 4150 Flange, Injectors, Fuel Pump, Regulator, Harness, Tuner, Kit

Part Number: SNE-550-871K

3.11 out of 5 stars ( 9 )

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X Stealth 4150 EFI Fuel Injection Systems 550-1001

Holley Terminator X Stealth 4150 EFI Fuel Injection Systems 550-1001

Holley Terminator X Stealth 4150 EFI Fuel Injection Systems 550-1001

Fuel Injection Systems, Terminator X, Stealth 4150 EFI, Four Injectors, Throttle Body, Speed Density, Aluminum, Shiny, Tunable, Kit

Part Number: HLY-550-1001

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems 550-1064

Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems 550-1064

Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems 550-1064

Fuel Injection Systems, Terminator X Max, Stealth 4150, 58X LS EFI, Four Injector, Throttle Body, Aluminum, Black, Trans Control, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1064

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X Stealth 4150 24X LS EFI Fuel Injection Systems 550-1021

Holley Terminator X Stealth 4150 24X LS EFI Fuel Injection Systems 550-1021

Holley Terminator X Stealth 4150 24X LS EFI Fuel Injection Systems 550-1021

Fuel Injection Systems, Terminator X, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Black, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1021

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

This product may not be eligible for select promotional offers

Holley Terminator X Stealth 4150 2X4 EFI Fuel Injection Systems 550-1076

Holley Terminator X Stealth 4150 2X4 EFI Fuel Injection Systems 550-1076

Holley Terminator X Stealth 4150 2X4 EFI Fuel Injection Systems 550-1076

Fuel Injection Systems, Terminator X, Stealth 4150, 2x4 EFI, Eight Injector, Dual Throttle Body, Speed Density, Aluminum, Gold, Tunable, Kit

Part Number: HLY-550-1076

Not Yet Reviewed

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems 550-1065

Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems 550-1065

Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems 550-1065

Fuel Injection Systems, Terminator X Max, Stealth 4150, 58X LS EFI, Four Injector, Throttle Body, Aluminum, Gold, Trans Control, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1065

Not Yet Reviewed

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X MAX Stealth 4150 24X LS EFI Fuel Injection Systems 550-1029

Holley Terminator X MAX Stealth 4150 24X LS EFI Fuel Injection Systems 550-1029

Holley Terminator X MAX Stealth 4150 24X LS EFI Fuel Injection Systems 550-1029

Fuel Injection Systems, Terminator X Max, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Aluminum, Black, Trans Control, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1029

Not Yet Reviewed

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X Stealth 4150 58X LS EFI Fuel Injection Systems 550-1061

Holley Terminator X Stealth 4150 58X LS EFI Fuel Injection Systems 550-1061

Holley Terminator X Stealth 4150 58X LS EFI Fuel Injection Systems 550-1061

Fuel Injection Systems, Terminator X, Stealth 4150, 58X LS EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Black, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1061

Not Yet Reviewed

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X Stealth 4150 24X LS EFI Fuel Injection Systems 550-1020

Holley Terminator X Stealth 4150 24X LS EFI Fuel Injection Systems 550-1020

Holley Terminator X Stealth 4150 24X LS EFI Fuel Injection Systems 550-1020

Fuel Injection Systems, Terminator X, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Shiny, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1020

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

This product may not be eligible for select promotional offers

Holley Terminator X Stealth 4150 58X LS EFI Fuel Injection Systems 550-1062

Holley Terminator X Stealth 4150 58X LS EFI Fuel Injection Systems 550-1062

Holley Terminator X Stealth 4150 58X LS EFI Fuel Injection Systems 550-1062

Fuel Injection Systems, Terminator X, Stealth 4150, 58X LS EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Gold, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1062

Not Yet Reviewed

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X MAX Stealth 4150 24X LS EFI Fuel Injection Systems 550-1028

Holley Terminator X MAX Stealth 4150 24X LS EFI Fuel Injection Systems 550-1028

Holley Terminator X MAX Stealth 4150 24X LS EFI Fuel Injection Systems 550-1028

Fuel Injection Systems, Terminator X Max, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Aluminum, Shiny, Trans Control, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1028

Not Yet Reviewed

Estimated Ship Date: Today

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This product may not be eligible for select promotional offers

Holley Terminator X MAX Stealth 4150 24X LS EFI Fuel Injection Systems 550-1030

Holley Terminator X MAX Stealth 4150 24X LS EFI Fuel Injection Systems 550-1030

Holley Terminator X MAX Stealth 4150 24X LS EFI Fuel Injection Systems 550-1030

Fuel Injection Systems, Terminator X Max, Stealth 4150, 24X LS EFI, Four Injector, Throttle Body, Aluminum, Gold, Trans Control, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1030

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

This product may not be eligible for select promotional offers

Holley Terminator X Stealth 4150 58X LS EFI Fuel Injection Systems 550-1060

Holley Terminator X Stealth 4150 58X LS EFI Fuel Injection Systems 550-1060

Holley Terminator X Stealth 4150 58X LS EFI Fuel Injection Systems 550-1060

Fuel Injection Systems, Terminator X, Stealth 4150, 58X LS EFI, Four Injector, Throttle Body, Speed Density, Aluminum, Shiny, Chevy, 4.8-7.0L, Kit

Part Number: HLY-550-1060

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

This product may not be eligible for select promotional offers

Related Articles

3 Reasons to Consider a Self-Learning Fuel Injection System Tech Article

3 Reasons to Consider a Self-Learning Fuel Injection System

Tuning is rewarding when you want to do it, but aggravating when you have to do it. Today’s self-learning fuel injection systems give us the best of both worlds. The injection units quickly learn what the engine wants to run at its best and offers additional tools for those who like to tinker.

Example images of throttle body and multi-port EFI kits Tech Article

Which fuel injection kit is right for me?

If you’re tired of messing with jets and needles, replacing your carburetor with a Fuel Injection System has never been easier. If you make the right choices, the system will work great with engine you have today. It can also support your planned upgrades.

Carbureted vs. EFI: Fuelab Tech Article

Carbureted vs. EFI: Fuelab Examines How Fuel Line Size Relates to Fuel Pressure Drop (and Why it Matters)!

Does size really matter when it comes to fuel lines? According to the fuel delivery system experts at Fuelab, it does. It’s because fuel line size and length have a direct effect on the amount of fuel pressure drop your fuel system will experience.

How do I pick the right size fuel injection kit? Tech Article

How do I pick the right size fuel injection kit?

EFI Kits are rated by the maximum horsepower they support with gasoline. But what about the smallest engine a system can support? Choosing an EFI system that’s too big will result in poor idle and bad throttle response, same as a carburetor. Keep reading to learn what affects these ratings and how to pick the right kit for your motor.

Can I run a turbocharger, supercharger, or nitrous oxide with my fuel injection kit? Tech Article

Can I run a turbocharger, supercharger, or nitrous oxide with my fuel injection kit?

Power adders like nitrous, turbochargers, and superchargers are a natural fit with EFI. If you want to use power adders now or in the future, buy an EFI kit that is Power Adder Compatible from the start. A power adder compatible kit will work fine with or without boost or nitrous, and it might be impossible to make a non-compatible kit work with power adders. Unfortunately, not all power adder compatible kits are created equal. They usually have:

Can I use a fuel injection kit to control ignition timing? Tech Article

Can I use a fuel injection kit to control ignition timing?

Most fuel injection kits will work with your existing ignition system. All they really need is a tach signal. Ignition Timing Advance can be handled Mechanically and/or with Vacuum, just like with a carburetor.

An example of 2 different in-tank style fuel pumps. Tech Article

What type of electric fuel pump should I use?

Electric fuel pumps come in three basic types. As long as a fuel pump provides the Flow Rate your engine needs at the pressure your Fuel Injected or Carbureted system requires, it will work just fine. It is just a matter of deciding which one works best for your installation.

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