MSD 2957 Atomic LS Master Early Truck Kit (GEN III 1999-2007) Installation User Manual
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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 30).
Note: There is a setting in Display Setup labeled User
Mode. When User Mode is changed from Basic
to Advanced, the fuel injector selection menu
will open up to all the fuel injector combinations
preprogrammed into the Atomic LS system.
This setting will also unlock a setting called
User Defined. User Defined allows the injector
flow rate to manually be entered by selecting
Set Calibration (Figure 30).
MAP Sensor: Once the engine type is selected above, the
OEM MAP Sensor will be automatically selected.
(Figure 30).
Note: There is a setting in Display Setup labeled User
Mode. When User Mode is changed from Basic
to Advanced, the MAP sensor selection menu
will open up to all the MAP Sensor combinations
preprogrammed into the Atomic LS system.
This setting will also unlock a setting called
User Defined. User Defined allows the Slope
and offset to manually be entered by selecting
Set Calibration.
Fuel Pump Type: There are three selections for the fuel pump
system. Select the system in use with the Atomic LS
Truck system (Figure 30).
•
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 the duty
cycle to 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.
Fuel Injector Type
Fuel Injector
Injector Lbs/Hr
Figure 30
Map Sensor
Fuel Pump Type