MSD 2910 Atomic EFI Master Kit Installation - Manual (Page 4)

4 INSTALLATION INSTRUCTIONS
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IN-TANK PUMPS
The MSD Atomic Fuel Pump (supplied only with Master Kit PN 2900) can be used in the tank however it
would require a sock, or filter element, on the pickup side (Figure 1). It is important to note that the wiring
used to run the pump will need to meet requirements to be submersed in fuel. When wiring an in-tank
pump, it is recommended to use a wire that conforms to SAE specifications J1128 and J378. This wiring
features a thermoplastic insulated wiring with polyvinyl chloride insulation for protection against gasoline,
oil, and more.
In addition, different fuel line will be required internally if the pump is to be mounted in the tank. Fuel line
that meets SAE 30R10 specifications MUST be used. Failure to do so will cause severe damage to your
engine and/or fuel system.
WARNING: Improper installation or use of fuel system components can cause severe damage your
engine and/or fuel system that will not be covered by the manufacturer’s warranty.
Atomic Fuel Pump, PN 2925: This pump features 3/8” inlet and outlet and is rated at 70 psi. The pump
will support approximately 525 hp and is approved for in-tank use (no wiring or in-tank mounting hardware/
pickup element are supplied).
Fuel Pump Kit, PN 2920: This Kit is supplied with MSD’s PWM Fuel Pump, a pre- and post-filter, 15-ft of
3/8 fuel injection line and mounting hardware.
Fuel System Return Kit, PN 2922: If you plan on running a return line with your Atomic LS, this kit provides
another 15-ft of 3/8” injection line, an MSD Regulator and two push-lock fittings.
High Horsepower Fuel Kit, PN 2921: This pump will support the power demands of engines up to 650 horsepower.
The pump features 3/8” inlet and outlet and is rated at 70 psi. The pump will support approximately 650 hp and
is approved for in-tank use (no wiring or in-tank mounting hardware/sock are supplied).
POWER ADDERS
The Atomic TBI will accept wet nitrous systems as well as forced induction systems generating up to 10-14
psi of manifold pressure. There are options to select in the Advanced settings that allow you to program
an air/fuel target when the nitrous is activated and when under boost conditions.
Nitrous: The Atomic fuel system does not provide the extra fuel required to safely operate a wet
nitrous system. The installation of a dedicated fuel pump for the nitrous system is required in order
to meet the fuel demands of a wet nitrous system. Timing can also be pulled out when the nitrous
is activated (only when timing is being controlled by the Atomic system.)
Forced Induction: In boosted applications, the fuel pump must be capable of meeting the
requirements of the increased fuel demand. Due to injector flow limitations, max horsepower with
forced induction systems will be limited to 525 horsepower. Proper fuel pump selection is imperative
to the performance and operation of the Atomic EFI.
Figure 2 WBO2 Sensor Location.
POSITION
AT LEAST
10°
02 SENSOR
EXHAUST
COLLECTOR
WIDE BAND OXYGEN SENSOR INSTALLATION
The MSD Atomic EFI system requires a single Wide Band
Oxygen Sensor (WBO2) for operation. MSD suggests that
the bung for this sensor be installed prior to starting any
other part of the conversion process. By having the WBO2
in place first, there is a reduced chance of the vehicle being
immobilized for an extended time. The bung for the WBO2
provided by MSD has a plug included so that the vehicle
can be driven between the time of exhaust modification and
installing the rest of the Atomic system, if needed.