Best Efi System: image
Top Pick

Sniper EFI master kit. The kit includes everything you need to install an EFI system, including a fuel pump, in-line fuel pump, and return bulkhead. It also comes with a set of spark plugs that can be used to start the engine. The kit is priced at $199 (?1,500). Notably, it was introduced by American automaker General Motors in 2015. The kit has been tested on four different engines. It’s claimed to have reduced emissions by up to 50%.

Honorable Mention

EZ-EFI Fuel Self-Tuning Kit has been designed to work with any carburised or multi-port fuel injection system. The kit is compatible with all major brands of petrol, diesel and turbochargers. It can be installed in an afternoon using the included instructions on the hand-held device. The system also includes a remote control which allows users to adjust the speed of the engine. The system’s user interface features a touchscreen display that displays various settings including throttle position, idle time, and more.

Best Efi System

Top 10 Best Efi System

1

FiTech Easy Street EFI System Up to 600HP

32 ratings | 1 offers | 32 Reviews
Price starts from: $1
Why we chose it
  • Comes with four FiTech 80-lb flow matched injectors
  • Reads tach signal from COIL,HEI, CDI, and many others
  • It is suitable for crate engines and performance engines
  • Features pre-programmed with Bolt-N-Go technology for out of the box performance
  • Includes an board fuel pump driver with PWM
FiTech Easy Street EFI System Up to 600HP: image
84%
customers recommend this product
4.2/ 5
2
Why we chose it
  • Natural Aluminum…
  • Includes Go EFI In-line Fuel Pump The Go Street EFI combined with the Inline Fuel Pump Fuel Delivery Kit is a ready-to-run system that strays away from the programmable features and sticks to the basic functions necessary to get the best performance and economy out of your street and mild performance engine. The Inline Fuel Pump Fuel Delivery Kit includes an EFI grade 255 L/PH inline external fuel pump that is suitable for engines making up to 600HP. This kit also includes 40-feet of EFI…
  • 400…
  • Four flow-matched 62-lb…
  • Self-learning…
FITech Fuel Injection 31003 GoStreet EFI - Throttle Body Master Kit 400 HP Natur: image
92%
customers recommend this product
4.6/ 5
3
Why we chose it
  • Holley just brought EFI within range! Introducing Sniper EFI! 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 carbureted vehicle. Put an end to cold start issues, hesitations, vapor lock, and flooding. Upgrade to Sniper EFI and get the tactical accuracy of EFI today!
  • Inlet/Outlet Size: 9/16-18 Female O-Ring (AN 6) MAP Sensor: 2Bar Max Horsepower Rating: 650 Naturally Aspirated Model: 4150 EFI Conversion Throttle Body Product Type: EFI Transmission: 700R4/200R4
  • Specs: CFM: 800 Coast Guard Approved: Yes Finish: Black Flange Style: Dual Bolt Pattern Fuel Pressure: 58.5 PSI Height: 3.28″ Injector Size: 100 lb./hr 58.5 PSI
  • Brand New Holley Sniper EFI Self-Tuning Kit – Black Ceramic Finish, 4 Barrel Fuel Injection Conversion – Self Tuning Kit plus Handheld EFI Monitor. (Part #550-511)
NEW HOLLEY SNIPER EFI SELF-TUNING KIT,800 CFM,BLACK,4BBL,FUEL INJECTION CONVERSION: image
82%
customers recommend this product
4.1/ 5
4

MSD Ignition 2900 Atomic EFI Master Kit

21 ratings | 1 offers | 21 Reviews
Price starts from: $1710.86
Why we chose it
    MSD Ignition 2900 Atomic EFI Master Kit: image
    86%
    customers recommend this product
    4.3/ 5
    Top Pick
    5

    Holley 550-511K EFI Self-Tuning Master Kit

    152 ratings | 13 offers | 152 Reviews
    Price: $1475.95$1678.26
    Why we chose it
    • Self tuning ECU means you don’t have to be a computer/tuning expert to enjoy EFI
    • Breathe new life into your Small Block Chevy or Big Block Chevy engine with this easy-to-install fuel injection/distributor ignition kit
    • Capable of supporting up to 650 HP
    • Throttle body mounted ECU – no extra computers to mount or relocate
    • Precision machined shutter wheel designed for improved accuracy at extreme engine RPM
    Holley 550-511K EFI Self-Tuning Master Kit: image
    84%
    customers recommend this product
    4.2/ 5
    6
    Why we chose it
      Holley Sniper Polished EFI Fuel Injection System Complete Master Kit 550-510K: image
      84%
      customers recommend this product
      4.2/ 5
      7

      Holley 550510K Sniper Efi Master Kit-Shiny

      46 ratings | 15 offers | 46 Reviews
      Price: $1475.95$1838.14
      Why we chose it
      • Bolt on carburetor replacement (designed to fit single & dual carb…
      • Sniper Self-Tuning Shiny Throttle…
      • Throttle body mounted ECU – no extra boxes to…
      • 3.5″ Touch…
      • Fuel System Kit For Troubleshooting Tips setting up your New Holley Sniper EFI System, please see this helpful video from Holley…
      Holley 550510K Sniper Efi Master Kit-Shiny: image
      88%
      customers recommend this product
      4.4/ 5
      8
      Why we chose it
      • The EZ-tach input, reads tach signal from Coil, HEI, MSD/CDI and many other brand ignitions
      • Comes with a handheld controller
      • Features a die cast construction with a beautiful finish
      • Pre-programmed with Bolt-N-Go technology for out of the box performance with no tuning required
      • It has extreme self-learning for wide range super-fast dial in correction
      Fitech Fuel Injection Go Street EFI System Master Kit w/ Inline Fuel Pump - 31003: image
      78%
      customers recommend this product
      3.9/ 5
      9
      Why we chose it
      • No software necessary intuitive self-learning system will work with only a few simple questions answered in the handheld’s Setup Wizard And one throttle screw adjustment
      • Includes in-line fuel pump.
      • Includes injectors And fuel rails supporting up to 650 HP
      • Direct bolt-on carburetor replacement with throttle body dimensions similar to Holley And other popular carburettors, including a Holley-style throttle linkage And 4150 square flange intake bolt pattern
      • Can control electric fuel pump, electric cooling fan And A/C line to raise idle RPM when A/C is turned on
      FAST 30227-06KIT EZ Fuel Self-Tuning Throttle Body Injection Kit w/Inline Fuel Pump: image
      80%
      customers recommend this product
      4/ 5
      10

      Holley 550510 Electronic Fuel Injection

      21 ratings | 4 offers | 21 Reviews
      Price: $1124.95$1236.13
      Why we chose it
      • Only 4 Wiring Connections Required! (Battery , Battery – , Switched Ignition & RPM). A Flame Arrestor is REQUIRED for marine installations, such as part number, 720-1 or 720-13
      • Throttle body mounted ECU no extra boxes to mount. Supports up to 650hp with Four 100 Lb/Hr Injectors!
      • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!. Simple Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own!) – NO laptop required! Note : Refer to the PDF attached below in Technical Specification for User Manual
      • Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange & Spread Bore manifolds – (Spread Bore Sealing Plate Part #9006 is recommended)
      Holley 550510 Electronic Fuel Injection: image
      70%
      customers recommend this product
      3.5/ 5
      Top Pick
      Holley 550-511K EFI Self-Tuning Master Kit
      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 your ride! Perfect for street rods, muscle cars, off road trucks or nearly any carbureted vehicle. The Sniper EFI master kit contains the most complete EFI fuel system on the market. Everything is included to completely plumb your fuel system including; 40 feet of 3/8
      Ranking the Brands
      FI-TECH: 20.00%
      FITech Fuel Injection: 10.00%
      Southwest Speed: 10.00%
      MSD Ignition: 10.00%
      Holley: 40.00%
      COMP Cams: 10.00%

      Comparison Table

      Сomparison: FiTech Easy Street EFI System Up to 600HP: imageСomparison: FITech Fuel Injection 31003 GoStreet EFI - Throttle Body Master Kit 400 HP Natur: imageСomparison: NEW HOLLEY SNIPER EFI SELF-TUNING KIT,800 CFM,BLACK,4BBL,FUEL INJECTION CONVERSION: imageСomparison: MSD Ignition 2900 Atomic EFI Master Kit: imageСomparison: Holley 550-511K EFI Self-Tuning Master Kit: imageСomparison: Holley Sniper Polished EFI Fuel Injection System Complete Master Kit 550-510K: imageСomparison: Holley 550510K Sniper Efi Master Kit-Shiny: imageСomparison: Fitech Fuel Injection Go Street EFI System Master Kit w/ Inline Fuel Pump - 31003: imageСomparison: FAST 30227-06KIT EZ Fuel Self-Tuning Throttle Body Injection Kit w/Inline Fuel Pump: imageСomparison: Holley 550510 Electronic Fuel Injection: image
      FiTech Easy Street EFI System Up to 600HPFITech Fuel Injection 31003 GoStreet EFI – Throttle Body Master Kit 400 HP NaturNEW HOLLEY SNIPER EFI SELF-TUNING KIT,800 CFM,BLACK,4BBL,FUEL INJECTION CONVERSIONMSD Ignition 2900 Atomic EFI Master KitHolley 550-511K EFI Self-Tuning Master KitHolley Sniper Polished EFI Fuel Injection System Complete Master Kit 550-510KHolley 550510K Sniper Efi Master Kit-ShinyFitech Fuel Injection Go Street EFI System Master Kit w/ Inline Fuel Pump – 31003FAST 30227-06KIT EZ Fuel Self-Tuning Throttle Body Injection Kit w/Inline Fuel PumpHolley 550510 Electronic Fuel Injection
      ManufacturerFITECHFITech Fuel InjectionHOLLEY PERFORMANCE PRODUCTSSniperHolleySniperFi TechCOMP CamsSniper
      BrandFI-TECHFITech Fuel InjectionSouthwest SpeedMSD IgnitionHolleyHolleyHolleyFI-TECHHolley
      Item Weight11.9 pounds25 pounds16.14 pounds20 pounds20 pounds21 pounds10.07 pounds9 pounds
      Product Dimensions11.5 x 14 x 7.5 inches24.2 x 18.3 x 8.4 inches21.1 x 10.4 x 8.9 inches25.5 x 14.5 x 9.5 inches24 x 18 x 8 inches22 x 11.9 x 14 inches; 10.07 Pounds12 x 11 x 8 inches
      Is Discontinued By ManufacturerNoNoNoNoNoNoNoNoNoNo

      Products with 5 star rating

      Tips and advices on YouTube

      Is it worth it? Replacing your carburetor with a Holley Sniper EFI | Hagerty DIY

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