Completely redesigned, the MSD Atomic 2 EFI system now features an 865 CFM throttle body with integrated ECU, full color touch screen, simple 4-wire hookup and several easy-to-use features. The new Master Kits include a complete fuel system, with an external fuel pressure regulator pre-set to 58.5 PSI, 20 feet of 3/8-inch EFI-rated fuel hose, fuel pump, filters, all necessary hardware and a bulkhead fitting to return fuel into the fuel tank. For information about the Atomic EFI 2 Master Kit in natural finish, click HERE For information about the Atomic EFI 2 Master Kit black finish, click HERE (Content courtesy of Holley)