MSD 2960 Atomic LS7 Master Kit Installation - Manual (Page 16)

16 INSTALLATION INSTRUCTIONS
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Fuel Injector: Once the engine type is selected above, the
OEM style injector will be automatically loaded in the
default calibration file. If a different injector is used,
change the setting to the correct injector. Most LS
based injectors have the part number stamped on
them (Figure 26).
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 a different sensor is used the slope and
offset can manually be entered (Figure 26).
Fuel Pump Type: There are three selections for the fuel pump
system. Select the system in use with the Atomic LS7
system (Figure 26).
• 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 to use Non-PWM with a regulator
when setting fuel pressure as the PWM setting may
decrease fuel pressure slightly at idle.
Idle RPM Target: Select the rpm that the engine should idle
at. The rpm range is adjustable in 25 rpm increments
(Figure 26).
Note: Running too high of an idle speed in an automatic
transmission equipped vehicle with a stock torque
converter can cause idle issues in gear.
Rev Limit: The rev-limiter is a fuel cut-off type rev-limiter.
Select the rpm range that engine should rev limit. The
range is 3,000 -12,000 rpm and is adjustable in 25
rpm increments. Default for the rev limit is 6,500 rpm
(Figure 26).
Once all of the settings in the Initial Setup menu are selected,
the Atomic has enough information to start and run the engine.
It is recommended to scroll 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 26