Master Kits*MSD is making Atomic EFI the simple solution for your LS EFI needs. Start your installation by knowing that you’re getting everything you need for your crate engine. These kits are each designed for a specific engine and are supplied with the Rail Assemblies, Handheld Controller, Power Module and Harness, Wide-Band 02 Sensor and Bung, -6 fittings for the fuel rails and hose for the cross-over.
There is one accessory ‘Installation Kits’ that provide the correct injector connectors for an LS1/LS6 when used with the PN 2950 LS2/3 Master Kit.
*Master kits do not include fuel pump and fuel lines.
3-Bolt Throttle Body,Early Kits - PN 2957For use with Cable Throttle Body only.
Throttle by Wire not included in kit.
4-Bolt Throttle BodyLate Engines - PN 2958For use with Cable Throttle Body only, MSD PN 2940
Installation KitsThese kits complement the Master Kits and provided the necessary brackets and injector connectors to complete and install for LS1/LS6 and LS Trucks. These kits provide different brackets for the rail assemblies as well as different injector connectors to adapt the LS2/3 Master Kit to work on the LS1/LS6 and truck intakes. Must be used with PN 2950 Master Kit.
MSD is breaking new ground in electronic fuel injection with the next generation of Atomic EFI – the all new Atomic LS platform. Where the Atomic TBI consolidated electronics and sensors into the throttle body itself, 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.
This innovative design and advanced technology drastically reduces the wiring of an LS fuel injection system. Instead of guiding a massive loom of wires from the ECU to the injectors, coil packs and associated engine sensors, the Atomic LS requires only a short length of wires that run from the fuel rail assembly to each specific sensor (all with factory connectors in place). For instance, the driver side fuel rail includes sensor connections for the coolant temp, coil packs, injectors, cam sensor, TPS and fuel pressure sensor. The passenger side incorporates the crank sensor, coil packs, injectors and only the other necessary sensor connections for your engine configuration. Not only does that save you time and aggravation from wiring, but it improves the overall cleanliness of the engine compartment.
When you run an LS engine, performance begins with the introduction of air into the intake manifold. MSD’s new 90mm LS Throttle Body answers the need for a high quality throttle body with a cable driven throttle mechanism that bolts to most factory and aftermarket intakes. MSD invested the time and resources to develop a cast throttle body assembly in order to achieve a unique parabolic bore form. This design helps deliver excellent driveability characteristics during part throttle that typical billet straight bore throttles just can’t deliver. We incorporated factory style bearings and seals on the throttle blade to achieve a very robust design that can withstand temperature swings seen in street applications.
The Atomic Adjustable Regulator is configured for a single -6AN inlet, and dual -6AN outlets (for regulator-to-tank line routing flexibility). The recommended operating range is 15-90 psig (pounds per square inch gauge). The maximum recommended flow rate is 500 liters/hour (2.2 GPM). The vacuum/boost compensation ratio is 1:1.