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EFI / Electronic Fuel Injection Systems

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FiTech Ultimate LS 1,000 HP EFI Short LS3 Port Intake Fuel Injection Master Kits 79635

FiTech Ultimate LS 1,000 HP EFI Short LS3 Port Intake Fuel Injection Master Kits 79635

FiTech Ultimate LS 1,000 HP EFI Short LS3 Port Intake Fuel Injection Master Kits 79635

Ultimate LS 1000 HP EFI System With Master Kit Short LS3 Port Intake

Part Number: FIF-79635

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 76688

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 76688

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 76688

Fuel Injection System, Ultimate Rebel, 500 HP, Cathedral Port, 92mm Throttle Body, In-Tank Fuel Pump, 36Lb., EV1, Without Transmission Controller, Kit

Part Number: FIF-76688

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 76289

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 76289

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 76289

Fuel Injection System, Ultimate Rebel, 500 HP, Cathedral Port, 92mm Throttle Body, In-Tank Fuel Pump, 36 Lb., EV1, With Transmission Controller, Kit

Part Number: FIF-76289

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 76689

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 76689

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 76689

Fuel Injection System, Ultimate Rebel, 500 HP, Cathedral Port, 92mm Throttle Body, In-Tank Fuel Pump, 36 Lb., EV1, With Transmission Controller, Kit

Part Number: FIF-76689

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 76290

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 76290

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 76290

Fuel Injection System, Ultimate Rebel, 750 HP, Cathedral Port, 102mm, In-Tank Fuel Pump, 55 Lb., EV1, Without Transmission Controller, Kit

Part Number: FIF-76290

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 79636

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 79636

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 79636

Ultimate LS 1000 HP EFI System With Master Kit Short LS7 Port Intake

Part Number: FIF-79636

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 76291

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 76291

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 76291

Fuel Injection System, Ultimate Rebel, 750 HP, Cathedral Port, 102mm Throttle Body, In-Tank Fuel Pump, 55 Lb., EV1, With Transmission Controller, Kit

Part Number: FIF-76291

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 79637

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 79637

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 79637

Ultimate LS 1000 HP EFI System With Master Kit Short LS7 Port Intake

Part Number: FIF-79637

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS 500 HP EFI Short Cathedral Intake Fuel Injection Master Kits 76301

FiTech Ultimate LS 500 HP EFI Short Cathedral Intake Fuel Injection Master Kits 76301

FiTech Ultimate LS 500 HP EFI Short Cathedral Intake Fuel Injection Master Kits 76301

Ultimate LS 500 HP EFI System With Master Kit Short Cathedral Intake

Part Number: FIF-76301

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS 1,000 HP EFI Short Cathedral Intake Fuel Injection Master Kits 78930

FiTech Ultimate LS 1,000 HP EFI Short Cathedral Intake Fuel Injection Master Kits 78930

FiTech Ultimate LS 1,000 HP EFI Short Cathedral Intake Fuel Injection Master Kits 78930

Ultimate LS 1000 HP EFI System With Master Kit Short Cathedral Intake

Part Number: FIF-78930

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS 1,000 HP EFI Short Cathedral Intake Fuel Injection Master Kits 78931

FiTech Ultimate LS 1,000 HP EFI Short Cathedral Intake Fuel Injection Master Kits 78931

FiTech Ultimate LS 1,000 HP EFI Short Cathedral Intake Fuel Injection Master Kits 78931

Ultimate LS 1000 HP EFI System With Master Kit Short Cathedral Intake

Part Number: FIF-78931

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS 1,000 HP EFI Long Runner Cathedral Intake Fuel Injection Master Kits 78932

FiTech Ultimate LS 1,000 HP EFI Long Runner Cathedral Intake Fuel Injection Master Kits 78932

FiTech Ultimate LS 1,000 HP EFI Long Runner Cathedral Intake Fuel Injection Master Kits 78932

Ultimate LS 1000 HP EFI System With Master Kit Long Runner Cathedral Intake

Part Number: FIF-78932

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 78936

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 78936

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 78936

Ultimate LS 1000 HP EFI System With Master Kit Short LS7 Port Intake

Part Number: FIF-78936

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 78937

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 78937

FiTech Ultimate LS 1,000 HP EFI Short LS7 Port Intake Fuel Injection Master Kits 78937

Ultimate LS 1000 HP EFI System With Master Kit Short LS7 Port Intake

Part Number: FIF-78937

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 79001

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 79001

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 79001

Fuel Injection, Ultimate LS, Ultimate LS Kit LS1/LS2/LS6 - 500HP w/o Trans Control, w/ led coil pack set

Part Number: FIF-79001

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79003

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79003

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79003

Fuel Injection, Ultimate LS, Ultimate LS Kit LS1/LS2/LS6 -750HP w/o Trans Control, w/ led coil pack set

Part Number: FIF-79003

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79004

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79004

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79004

Fuel Injection, Ultimate LS, Ultimate LS Kit LS1/LS2/LS6 -750HP w/ Trans Control, w/ led coil pack set

Part Number: FIF-79004

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79008

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79008

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79008

Fuel Injection, Ultimate LS, Ultimate LS Tall for LS1/LS2/LS6 - 750hp w/o Trans Control for truck ACC, led coil pack set

Part Number: FIF-79008

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 79011

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 79011

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 79011

Fuel Injection, Ultimate LS, Ultimate LS Kit LS3/L92 - 500HP w/o Trans Control, w/ led coil pack set

Part Number: FIF-79011

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 79012

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 79012

FiTech Ultimate LS EFI 500 HP Fuel Injection Systems 79012

Fuel Injection, Ultimate LS, Ultimate LS Kit LS3/L92 - 500HP w/ Trans Control, w/ led coil pack set

Part Number: FIF-79012

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79013

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79013

FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 79013

Fuel Injection, Ultimate LS, Ultimate LS Kit LS3/L92 - 750HP w/o Trans Control, w/ led coil pack set

Part Number: FIF-79013

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 79088

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 79088

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 79088

Fuel Injection System, Ultimate Rebel, 500 HP, Cathedral Port, 92mm, No Fuel Pump, LS3 Coils, 36 Lb., EV1, Without Transmission Controller, Kit

Part Number: FIF-79088

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 79089

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 79089

FiTech Ultimate Rebel LS 500 HP EFI Fuel Injection Systems 79089

Fuel Injection System, Ultimate Rebel, 500 HP, Cathedral Port, 92mm, No Fuel Pump, LS3 Coils, 36 Lb., EV1, With Transmission Controller, Kit

Part Number: FIF-79089

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 79090

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 79090

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 79090

Fuel Injection System, Ultimate Rebel, 750 HP, Cathedral Port, 102mm, No Fuel Pump, LS3 Coils, 55 Lb., EV1, Without Transmission Controller, Kit

Part Number: FIF-79090

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 79091

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 79091

FiTech Ultimate Rebel LS 750 HP EFI Fuel Injection Systems 79091

Fuel Injection System, Ultimate Rebel, 750 HP, Cathedral Port, 102mm, No Fuel Pump, LS3 Coils, 55 Lb., EV1, With Transmission Controller, Kit

Part Number: FIF-79091

Not Yet Reviewed

Estimated Ship Date: Nov 17, 2025 if ordered today

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Estimated Ship Date: Nov 17, 2025 if ordered today

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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