Racing EFI Systems
- FiTech®Retro LS Fuel Injection Kit (37001)Retro LS Fuel Injection Kit by FiTech®. FiTech Fuel Injection introduces the Retro LS! Have you been hesitant on switching to EFI because you like the traditional look of a carburetor? Do you have a GM 4L60/80E Transmission in your...Classic Carburetor Gold FinishAnnular discharge$1,834.00
- Torque Solution®Flex Fuel Sensor Bracket (TS-UNI-625)Flex Fuel Sensor Bracket by Torque Solution®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$79.48
- Big End Performance®Weather Pack Connectors (54001)Weather Pack Connectors (54001) by Big End Performance®. This Big End Performance product is just the option for you in case you want to get the most out of your auto. It is made from first-rate materials to provide the highest level of...The unique design of the weather pac connector provides reliable connections that are not affected by water, oil, gasoline, dirt, vibration or temperatureConnector locks together and provides each terminal with its own barrel, which leaves no chance of shorting$20.70
- Big End Performance®Weather Pack Connectors (54002)Weather Pack Connectors (54002) by Big End Performance®. This Big End Performance product is just the option for you in case you want to get the most out of your auto. It is made from first-rate materials to provide the highest level of...The unique design of the weather pac connector provides reliable connections that are not affected by water, oil, gasoline, dirt, vibration or temperatureConnector locks together and provides each terminal with its own barrel, which leaves no chance of shorting$21.81
- FiTech®Ultimate Torque Plus LS Fuel Injection Kit (70019)Ultimate Torque Plus LS Fuel Injection Kit (70019) by FiTech®. The Ultimate LS Torque Plus Cathedral Port Composite 600HP intake manifold kit with cable operated 92mm throttle body and trans control are self-tuning systems for LS...High quality at an affordable priceExpertly made from premium materials$2,085.95
- FiTech®Ultimate Torque Plus LS Fuel Injection Kit (70020)Ultimate Torque Plus LS Fuel Injection Kit (70020) by FiTech®. The Ultimate LS Torque Plus Cathedral Port Composite 600HP intake manifold kit with cable operated 92mm throttle body and trans control are self-tuning systems for LS...High quality at an affordable priceExpertly made from premium materials$2,355.95
- Sniper®2 EFI Conversion Handheld Controller Interface (553-202)2 EFI Conversion Handheld Controller Interface by Sniper®. Designed with big speed fans in mind, this mind-blowing fuel system upgrade will help you maximize engine performance and fuel efficiency. It’s easy to install and will help...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$249.95
- Sniper®2 EFI Conversion Kit (550-511-3XX)2 EFI Conversion Kit (550-511-3XX) by Sniper®. Designed with big speed fans in mind, this mind-blowing fuel system upgrade will help you maximize engine performance and fuel efficiency. It’s easy to install and will help you achieve...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$1,299.95
- Sniper®2 EFI Conversion Kit (550-510-3XX)2 EFI Conversion Kit (550-510-3XX) by Sniper®. Designed with big speed fans in mind, this mind-blowing fuel system upgrade will help you maximize engine performance and fuel efficiency. It’s easy to install and will help you achieve...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$1,299.95
- Sniper®2 EFI Conversion Kit with Inline Fuel Pump Master Kit (550-511-3XK)2 EFI Conversion Kit with Inline Fuel Pump Master Kit (550-511-3XK) by Sniper®. Designed with big speed fans in mind, this mind-blowing fuel system upgrade will help you maximize engine performance and fuel efficiency. It’s easy to...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$1,699.95
- Sniper®2 EFI Conversion Kit with Inline Fuel Pump Master Kit (550-510-3XK)2 EFI Conversion Kit with Inline Fuel Pump Master Kit (550-510-3XK) by Sniper®. Designed with big speed fans in mind, this mind-blowing fuel system upgrade will help you maximize engine performance and fuel efficiency. It’s easy to...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$1,699.95
- Sniper®2 EFI Conversion Power Distribution Module (554-200)2 EFI Conversion Power Distribution Module by Sniper®. Designed with big speed fans in mind, this mind-blowing fuel system upgrade will help you maximize engine performance and fuel efficiency. It’s easy to install and will help you...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$149.95
- Sniper®2 EFI Conversion Upgrade Kit with Regulator (550-511-3AE)2 EFI Conversion Upgrade Kit with Regulator (550-511-3AE) by Sniper®. Designed with big speed fans in mind, this mind-blowing fuel system upgrade will help you maximize engine performance and fuel efficiency. It’s easy to install and...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$1,199.95
- Sniper®2 EFI Conversion Upgrade Kit without Regulator (550-511-3AX)2 EFI Conversion Upgrade Kit without Regulator (550-511-3AX) by Sniper®. Designed with big speed fans in mind, this mind-blowing fuel system upgrade will help you maximize engine performance and fuel efficiency. It’s easy to install...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$1,099.95
- Aeromotive®Dual Rail EFI Return SystemDual Rail EFI Return System by Aeromotive®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...High quality at an affordable priceExpertly made from premium materials$1,514.95 - $1,575.95
- Sniper®BBD EFI Fuel Injection KitBBD EFI Fuel Injection Kit by Sniper®. Are you tired of struggling with the old BBD carburetor on your Jeep®? Does your off road rig leave you hanging at extreme angles while on the trail? The EFI team at Holley® has designed the...Bolt on BBD Carburetor ReplacementEngineered specifically for 1971-1986 Jeep CJ’s with 258ci 6 Cylinder Engines$1,519.95 - $1,899.95
- Aeromotive®Carb to EFI Throttle Body Phantom SystemCarb to EFI Throttle Body Phantom System by Aeromotive®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...High quality at an affordable priceExpertly made from premium materials$1,462.95 - $1,524.95
- Holley®EFI Fuel System KitEFI Fuel System Kit by Holley®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at...High quality at an affordable priceExpertly made from premium materials$379.95 - $999.95
- Sniper®EFI Self-Tuning Master KitEFI Self-Tuning Master Kit by Sniper®. Holley just brought EFI within range – introducing Sniper EFI master kits! It's economically priced so you can have all the benefits of EFI and still have money to finish or upgrade the rest of...Bolt on carburetor replacement (designed to fit single & dual carb manifolds)Throttle body mounted ECU – no extra boxes to mount$1,589.95
- Sniper®EFI Self-Tuning KitEFI Self-Tuning Kit by Sniper®. It's economically priced so you can have all the benefits of EFI and still have money to finish or upgrade the rest of your ride! Perfect for street rods, muscle cars, off road trucks or nearly any...Bolt on carburetor replacement (designed to fit single and dual carb manifolds)Throttle body mounted ECU - no extra boxes to mount$1,259.95
- Holley®Terminator™ Stealth EFI Base KitTerminator™ Stealth EFI Base Kit by Holley®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Carburetor looks with the drivability of EFITrouble-free performance with today’s fuels - put an end to vapor lock and fuel varnish problems$2,756.95 - $2,839.95
- Sniper®EFI Stealth KitEFI Stealth Kit by Sniper®. Introducing the Sniper Stealth 4500 EFI System! Wanting to convert your Dragster or Pro-street vehicle to Fuel Injection? Look no further! The Sniper Stealth 4500 EFI system from Holley features 8, 100LB/HR...Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr InjectorsCompatible with Draw through or Blow through forced induction applications$1,329.95 - $2,149.95
- Aeromotive®EFI Fuel SystemEFI Fuel System by Aeromotive®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at...High quality at an affordable priceExpertly made from premium materials$2,471.95
- Sniper®Super Sniper EFI KitSuper Sniper EFI Kit by Sniper®. Looking to convert your blow thru carbureted turbo engine to EFI? Look no further than Holley for the Super Sniper EFI systems featuring Fuel Injectors. No need for a separate nitrous controller! Every...Built-in Single stage progressive nitrous controlIntegrated ignition timing control for precise timing curves$1,519.95 - $1,899.95
- Aeromotive®EFI Returnless Phantom Phantom SystemEFI Returnless Phantom Phantom System by Aeromotive®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...High quality at an affordable priceExpertly made from premium materials$1,118.95 - $1,174.95
- Aeromotive®OEM Returnless Rail SystemOEM Returnless Rail System by Aeromotive®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...High quality at an affordable priceExpertly made from premium materials$1,524.95 - $1,586.95
- DeatschWerks®EFI System Multi-Purpose O-RingEFI System Multi-Purpose O-Ring by DeatschWerks®. Designed utilizing the latest technology, this product by DeatschWerks features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...High quality at an affordable priceExpertly made from premium materials$10.00
- Fast®Connector Kit with TerminalsConnector Kit with Terminals by Fast®. Make your vehicle faster and more powerful with premium-quality performance fuel system parts. Manufactured using the highest grade materials and the latest technology, they deliver the ultimate in...High quality at an affordable priceExpertly made from premium materials$6.95 - $84.95
- Fast®EZ-EFI® Marine KitEZ-EFI® Marine Kit by Fast®. Make your vehicle faster and more powerful with premium-quality performance fuel system parts. Manufactured using the highest grade materials and the latest technology, they deliver the ultimate in...High quality at an affordable priceExpertly made from premium materials$2,827.95 - $2,979.95
- Fast®EZ-EFI™ Retrofit Electric Fuel Pump KitEZ-EFI™ Retrofit Electric Fuel Pump Kit by Fast®. Make your vehicle faster and more powerful with premium-quality performance fuel system parts. Manufactured using the highest grade materials and the latest technology, they deliver...High quality at an affordable priceExpertly made from premium materials$490.95 - $597.95
No matter whether it is a naturally-aspirated or turbocharged engine, the right air-fuel mixture is what determines its smooth and efficient operation. For a gasoline engine, the ideal A/F ratio is 14.7:1, which stands for 14.7 parts of air to 1 part of fuel. For many decades, this has been the job of carburetors. However, even the best modern-day carb is far from perfect since it’s not able to provide an engine with the right air-fuel mixture across a wide RPM range, especially if the motor has four or more cylinders, which is why almost all vehicles today, including race cars, use a more advanced way of preparing an air-fuel mixture, which is electronic fuel injection.
An electronic fuel injection system is a complex arrangement of different parts and components, including a fuel delivery system itself with its high-pressure electric fuel pump and injectors, a fuel pressure regulator, fuel lines, wires, various sensors, and an engine control unit. Without exaggeration, the latter can be considered as the brain of a vehicle that manages every aspect of engine operation. It controls the fuel mixture, an idle speed, ignition timing, and, sometimes, even valve timing, as well as performs several other tasks. The ECU is fed with data from different sensors, compares this information and makes a decision on how much fuel must be injected into the air that comes from the intake manifold, or which spark plug must be used, etc.
There are several types of fuel injection systems, including single point or throttle body, multipoint, sequential and direct injection setups. The first one is the simplest and least efficient type of EFI systems, so it is almost not used for racing applications, while the latter one is the most advanced type of fuel ignition, so most likely your modern-day race car is equipped with it. Unlike with multipoint and sequential EFI systems where fuel is sprayed by injectors into intake ports to be mixed with the incoming air and then enter the engine, in a direct injection setup, injectors are placed in the cylinder head and spray fuel directly into the combustion chamber where it mixes with the air. This significantly improves performance and reduces fuel consumption.