Owners manual

2 INSTALLATION INSTRUCTIONS
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REGULATOR MOUNTING
Using the two (2) supplied 10-32 x
0.375 Button Head Cap Screws and
a 1/8-inch hex key (Allen wrench),
attach the regulator bracket to the
regulator body. The regulator may
then be mounted to the firewall, or
other convenient surface. Regulator
orientation is not critical, but be
mindful of adjustment screw access
and hose routing. Refer to Figure 3
for a mounting bracket template.
Use the schematic below as a guide when installing the kit in conjunction with an Atomic LS EFI system
(Figure 2). There are two possible connection points (one at the rear of each fuel rail assembly). One
rail will be connected to the fuel supply in an operational system. DO NOT “tee” into the supply line and
leave the opposing fuel rail plugged or capped (Figure 4). Fuel from the opposing rail should be routed
to the regulator inlet port (using the supplied hose and fittings). The hose length between the rail and
regulator is not critical, but generally speaking, should be kept to a minimum.
Figure 3 Regulator Mounting Bracket Template
FUEL
FILTER
FUEL TANK
FUEL
PUMP
IT IS RECOMMENDED TO MOUNT
THE FUEL PUMP IN THE TANK
WHENEVER POSSIBLE. IF IT MUST
BE MOUNTED EXTERNALLY
, MOUNT
THE PUMP WITHIN 2-FEET OF THE
FUEL TANK SENDING UNIT.
FUEL RAIL
(UNDER COVER)
FUEL RAIL
(UNDER COVER)
FUEL RAIL
(UNDER COVER)
MSD ADJUSTABLE
REGULATOR
Figure 2 Atomic LS Return Fuel System.
2.200”
ACCOMMODATES
#10 SCREW