Holley 550-511 Sniper EFI Self-Tuning kit + handheld EFI monitor- Black Ceramic Finish

Pricing: $999.95


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!
Bolt on carburetor replacement (designed to fit single & dual carb manifolds)
Throttle body mounted ECU – no extra boxes to mount
Supports up to 650hp
4 injector version
4 wire vehicle connection (Battery +, Battery - , Switched Ignition & RPM)
Integrated fuel pressure regulator
Integrated ignition timing control & coil driver
Color touchscreen for setup and gauge views
Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
Available in base & master kits (Master kits include complete fuel system: fuel pump, filters, feed and return hose and all fittings including fuel tank return line bulkhead fitting.)
The included Wideband Oxygen Sensor provides realtime Fuel Map Learn!


  • 550-511
  • 550-511
  • 090127729007
  • Holley Performance
  • New

Shipping Information

  • Item Requires Shipping
  • 9.0 lbs.
  • W11.0000” x H8.0000” x L12.2500”

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.

  • We don’t just want your business today. We want to EARN your business for LIFE!
  • USA Owned, Operated & Employed
  • Installers & Resellers Click Here to Apply
  • We Specialize In:
    • GM LS Conversions
    • Engine & Trans Combo Kits
    • Unique Ready to Run Engines
  • Have a question?
  • 888-748-4655 Mon-Fri 8AM-6PM EST
  • Click above for 24/7 Live Chat Service.