MSD 2960 Atomic LS7 Master Kit Installation - Manual (Page 6)

6 INSTALLATION INSTRUCTIONS
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7. STOP. Visually inspect and ensure all the injectors are
sitting evenly and the injector o-rings are not pinched
or visible. Failure to install the injectors correctly can
result in an engine fire.
8. Begin routing the sensor harnesses and plugging
them into the appropriate sensors.
9. Snap the rail covers in place and secure them onto
the fuel rails with the supplied 8/32” socket head cap
screws (Figure 13).
10. Secure the front cover onto the fuel rail with the
supplied 8/32” socket head cap screws. Install the
back rail cover plate onto the assembly and secure it
with the supplied socket head cap screws.
FUEL RAIL/ECU WIRING
The Atomic LS7 kit has several harnesses to install with the different variations of the OE sensors.
These adapter harnesses plug into the connectors found on the rails themselves. The IAC and TPS
connectors are on both rails to accommodate the different throttle body configurations.
Air Conditioning kick up (AC): When 12v is applied to the AC kick up wire, the ECU will kick up the
and ground the red Fan 1 wire to compensate for the engine load change created by the AC
compressor.
Alternator: The kit plugs directly into the factory GM alternator.
Cam Sensor: The kit supports the 4x cam sensors. The easiest way to identify the cam sensor on
a stock engine would be by locating the sensor on the motor. The 4x sensor is mounted on
the timing chain cover.
Controller area network (CAN): The kit utilizes a CAN communication for wiring between the fuel
rails/ECU and the Power module.
Crank sensor: The kit supports the 58x crankshaft trigger wheels.
Engine Coolant Temperature (ECT) sensor: The engine coolant temperature is monitored by the
ECU for fuel and ignition adjustments in closed loop operation.
Fuel Pressure (FP) Sensor: The kit includes a fuel pressure sensor which is already installed on the
driver side fuel rail.
Idle Air Control (IAC) Sensor: The kit has a connector on each rail to accommodate different intake
styles. IAC must be plugged into the driver side connector.
Ignition Coils: The kit has a factory connector that will connect to the factory coil bracket harness
on each valve cover (not supplied with the kit). There is an extra ground wire with each coil
bracket connector that should be grounded to the back of each cylinder head.
Injectors: The kit supports the factory EV6 style injectors (Figure 14).
Intake Air Temperature (IAT) sensor: The sensor is supplied in the parts bag.
It is recommended to install the sensor in the intake air track before the
throttle body. A ¾” hole is required for the sensor.
Map sensor: The kit supports the original equipment (OE) MAP sensors.
Oil Pressure (Oil) sensor: The kit utilizes the factory oil pressure sensor. There
are different style sensors, but the connector is the same between these
sensors.
Power: The heavy gauge wire supplies 12v to both fuel rails from the power
module.
Figure 13
Figure 14