MSD 2950 Atomic LS2_LS3 Master Kit Installation - Manual (Page 14)

14 INSTALLATION INSTRUCTIONS
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Injectors: Once the engine type is selected above, the OEM
style injector will be automatically selected. However, if you
are running different injectors, select the part number. Most
LS based injectors have the part number stamped on them.
If using different injectors, you may enter the flow rate in
pounds per hour.
MAP Sensor: Once the engine type is selected above, the
OEM MAP Sensor will be automatically selected. However,
if you are running a different sensor, you may enter the
slope and offset.
Fuel Pump Type: There are three selections for the fuel pump
system. Select the system that you are using on your vehicle.
• Pulse Width Modulated: This selection is used only when
running a returnless fuel system with NO regulator.
• Non-PWM with Regulator: This selection is used when
running a return style system with a regulator.
• PWM with Regulator: This selection is used when running
a return style system with a regulator. It will run the
pump at 50% duty cycle at idle producing quieter pump
operation and will increase a duty cycle of 100% as the
throttle and injector load increase.
Note: It is recommended that you use Non-PWM with a
regulator when setting fuel pressure as the PWM
setting may decrease fuel pressure slightly at idle
depending on the pump used.
Idle RPM Target: Select the rpm that you want the engine to
idle at. The rpm range is adjustable in 25 rpm increments.
Rev Limit: There are two rev limit settings to set; Fuel and
Ignition. Select the rpm range that you want as a rev limiter.
The limiter will be activated by either turning off the ignition
or fuel. You can also select both. The range is 3,000 -12,000
rpm and is adjustable in 25 rpm increments. Default for the
fuel limit is 7,000 rpm and 7,100 for the ignition.
Once all of the settings in the Initial Setup menu are selected,
the Atomic has enough information to start and run the engine.
However, we recommend scrolling through the advanced
settings to program selections that may be useful after the
initial start up (such as the cooling fan activation temperatures).
Rev Limit
Idel RPM Target
Fuel Injector Type
Map Sensor
Fuel Pump Type
Figure 19