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MSD Atomic EFI

MSD Ignition
MSD Atomic EFI

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The all new Atomic EFI system was designed with two goals: simplicity and performance. Simplicity was achieved when MSD rewrote the industry standard for easy installation and programming. Performance is served through improved drivability from idle to full throttle blasts. The MSD Atomic EFI can be installed with basic hand tools in just a weekend! In fact with little preparation, installation can be started on Saturday morning and the car will make a cruise that night. This is due in large part to the ability to run a returnless fuel system so there are no modifications to the tank and no need to run another fuel line (in most applications). MSD incorporated the ECU into the throttle body to reduce the wiring and connections. MSD also moved the four main sensors inside the ECU for even less under hood clutter and wiring. The Atomic EFI comes with a compact handheld monitor that allows you to select a number of parameters to match your engine combination. This will get the engine to fire up and it will start learning your combination immediately. No software programs to learn, and certainly no jets or idle mixture screws. In the end the Atomic EFI delivers the performance and drivability expected from an EFI yet with an installation so easy you'll have the rest of the weekend to cruise.

Basic Kit Includes: Throttle Body, Power Module, Wide Band O2 Sensor, Handheld Programmer

Master Kit Includes: Throttle Body, Power Module, Wide Band O2 Sensor, Handheld Programmer, Fuel Pump, Fuel Filters, Brackets, High Pressure hose & Clamps

  • Half the connections of other EFI kits
  • Returnless fuel system design - No need to run a second fuel line
  • Control the ignition timing through the ECU
  • Control two cooling fans for consistent engine temperatures
  • Improved air/fuel distribution through annular ring injection design
  • Self learning technology eliminates the need for PC programming
  • C.A.R.B. Approved: E.O.# D-722

    JEGS EZ Kits are designed by JEGS professionals to ensure that you get all the correct parts you need.

    See instructions for complete diagram

    Frequently Asked Questions

  • 13 Products
    Fuel Filters

    Atomic EFI Fuel Pre-Filter
  • For Use with 121-2920 & 121-2921
  • $21.95
    Order Today Ships 04/09/15

    Atomic EFI Fuel Post-Filter
  • For Use with 121-2920 & 121-2921
  • $28.95
    Fuel Injection Kits

    Atomic EFI Master Kit
  • Max 525 HP
  • CARB E.O Number D-722
  • $2,428.95

    Atomic EFI Basic Kit
  • CARB E.O Number D-722
  • $2,125.95

    Atomic EFI Kit
  • Max 620 HP
  • Easy Kits
    Fuel Line

    Atomic Fuel Line
  • Diameter: 3/8"
  • Length: 15 ft.
  • $149.95
    Fuel Pressure Regulator

    Atomic Fuel Pressure Regulator
  • Operating Range 15-90 psig
  • Flow Rate 2.2 GPM
  • Single -6AN Inlet
  • Dual -6AN OutletsOutlets
  • $187.95
    Order Today Ships 04/09/15
    Fuel Pump Kits

    Atomic EFI Fuel Pump Kit
  • Supports up to 525 HP
  • $396.95
    Order Today Ships 04/09/15

    Atomic EFI Fuel Pump Kit
  • Supports 525-650 HP
  • $599.95
    Fuel Pump Return Kits

    Fuel Pump Return Kit
  • Return Style Regulator
  • 15 ft of 3/8" Fuel Line
  • Fittings
  • $291.95
    Fuel Pumps

    Atomic EFI Fuel Pump
  • Supports up to 525 HP
  • $182.95
    Hand-Held Module

    Atomic EFI TBI Hand-Held Module
  • For Use with 121-2900
  • $225.95
    Hose Clamp Kit

    Hose Clamp Kit
  • 35/64"-21/32" Diameter
  • Set of 10
  • $22.95
    Order Today Ships 04/09/15

    13 Products