FREE SHIPPING & HANDLING!*                           Order by 11 PM EST for Same Day Shipping!

MSD Atomic EFI LS Kits


MSD Ignition
MSD Atomic EFI LS Kits

Product images may differ from actual product appearance.

MSD is breaking ground in electronic fuel injection with the next generation of Atomic EFI: the all-new Atomic LS platform. The LS platform incorporates the electronics into the fuel rails of the system. There's no bulky ECU to mount and therefore no wires to route to and from--it's all on the engine, hidden in plain sight. The Atomic LS only has a short length of wires that run from the fuel rail assembly to each specific sensor, eliminating the massive loom of wires from the ECU. Not only does that spare you wiring aggravation, it improves the overall tidiness of the engine compartment.

There is no need for a PC as you simply answer a few questions on the supplied handheld controller and fire up the engine. The Atomic LS will learn how to best tune your LS engine so you can enjoy the performance and drivability of your vehicle.

MSD Atomic EFI LS Kits meet your LS EFI needs. Their new, innovative technology simplifies LS engine swaps. Available as two complete Master Kits: one for LS2/LS3 engines and another for the LS7. Each kit is designed for a specific engine and supplied with rail assemblies, handheld controller, power module and harness, wideband O2 sensor and bung, -6AN fittings for the fuel rails, and hose for the crossover. There are two accessory Installation Kits that provide the correct injector connectors for an LS1/LS6 when used with LS2/LS3 Master Kit 121-2950.

Master Kits contain everything needed to complete your LS swap (fuel pump and fuel lines not included).

Installation Kits complement the LS2/LS3 Master Kit by providing necessary brackets and injector connectors to complete an install for LS1/LS6 and LS Truck Kits.

Features
  • Easy Setup
  • No Laptop
  • Self Tuning
  • Integrated fuel rail and ECU significantly reduce the amount of wire
  • Improves the aesthetics of the engine bay with less wires and NO ECU to mount
  • Compatible with return or return-less fuel systems
  • Automatically recognizes 24 or 58 crank trigger wheels
  • Kits available for LS1/LS6, LS2/LS3, and LS7


  • 8 Products
    Master Kits

    121-2950
    Atomic EFI LS Master Kit
  • LS2/LS3
  • $2,495.95
    Ships

    121-2950K
    Atomic EFI Kit with Aeromotive Fuel Pump
  • LS1 & LS6
    Includes:
  • Atomic EFI LS Master Kit
  • Phantom Stealth 340 Fuel System
  • Atomic EFI LS Installation Kit
  • $2,725.99
    Ships

    121-2950K1
    Atomic EFI Kit with Aeromotive Fuel Pump
  • LS2 & LS3
    Includes:
  • Atomic EFI LS Master Kit
  • Phantom Stealth 340 Fuel System
  • $2,563.99
    Ships

    121-2957
    Atomic LS Master Early Truck Kit
  • GEN III 1999-2007 (3 Bolt Throttle Body)
  • $2,495.95
    Ships

    121-2958
    Atomic LS Master Late Truck Kit
  • GEN IV 2007-2013 (4 Bolt Throttle Body)
  • $2,495.95
    Ships

    121-2960
    Atomic EFI LS Master Kit
  • LS7
  • $2,794.95
    Ships

    121-2960K1
    Atomic EFI Kit with Aeromotive Fuel Pump
  • LS - Truck LQ9
    Includes:
  • Atomic EFI LS Master Kit
  • Phantom Stealth 340 Fuel System
  • Atomic EFI LS Installation Kit
  • $3,019.99
    Order Today Ships 09/09/14
    Installation Kits

    121-2955
    Atomic EFI LS Installation Kit
  • LS1/LS6
  • $174.95
    Ships

    8 Products