These MSD Atomic EFI fuel injection systems are the perfect choice for anyone planning to convert from carburetor to fuel injection.
They are also a great choice for LS engines with carb-style manifolds like the LS1 in the above photos shown both on our dyno and posing with Miss Painless Performance. We put this Atomic EFI equipped LS1 through its paces in our shop El Camino on the Autobahn Country Club road race track to see how it would do. Check out the video and see for yourself!
These units are simple to install and self-learning as explained in more detail below. They are rated to 600 hp.
Kits include a throttle body, power module (with wideband oxygen sensor), and handheld controller. The throttle body features an integral ECU built on the side, incorporating the TPS, MAP, IAT, and fuel pressure sensors, all in one location.
Fuel delivery is provided by four precision 80 psi injectors featuring a stainless steel ball and seat metering method for maximum internal sealing. They also use internal fuel rails, providing a sleek appearance and removing fitting connections where leaks can develop. Atop the Atomic EFIs are annular booster rings that deliver superior atomization of the best fuel mixture, ensuring the best possible fuel delivery.
Best of all, the MSD Atomic EFI fuel injection systems bolt directly to any standard square bore carbureted intake manifold and accept the same linkage as most carburetors. The 1.75 in. diameter throttle inlets ride in precision roller bearings for a smooth pedal transition. The Atomic EFIs' unique TPS is a self-calibrating, non-contact sensor, which means that you don't have to worry about configuring it during setup.
The included power module is a remote mounted piece that handles all of the high-current loads. MSD's CAN-Bus technology allows for a single, clean connection between these units and the throttle body mounted ECU. Control all of the MSD Atomic EFI fuel injection systems' functions with the hand-held device. Initial setup takes about five minutes, and you'll answer six questions about your specific engine. After the initial setup is complete, the device can provide you with engine data to help you keep your engine working properly. They also feature a removable micro-SD card to record and store data so that you can see what's going on with your engine.
These are great units. We put about 14,000 miles on our LS1 and it performed flawlessly. It is an outstanding choice for the backyard mechanic looking for the benefits of EFI without a lot of drama.