Installation Owner manual

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Atomic EFI

PN 2920 - Fuel Pump Kit, 525 HP

Installation of this product requires detailed knowledge of automotive systems

and repair procedures. Installation of fuel system parts and any fuel tank

modiﬁcations must be carried out by a qualiﬁed automotive technician. Installation of fuel system

parts requires handling of gasoline. Ensure that work is performed in a well ventilated area with an

approved ﬁre extinguisher nearby. Extinguish all open ﬂames, prohibit smoking and eliminate all

sources of ignition in the area of the vehicle before beginning the installation.

When working with fuel systems, eye goggles and other safety apparel should be worn to protect

against debris and sprayed gasoline. The ﬁnished work must be thoroughly checked to ensure

there are no fuel leaks.

Parts Included:

1 - Fuel Pump

1 - Small Parts Bag (screws, nuts & washers)

2 - Fuel Pump Clamps

1 - Pre Filter (pre pump)

1 - Post Filter (post pump)

15 ft 3/8" Fuel Line

DANGER

CAUTION

WARNING

NOTICE

A Returnless fuel system does have limitations depending on your application and a few other

variables. Please see the included addendum for determining whether a returnless system is right for you.

DANGER

CAUTION

WARNING

NOTICE

DANGER

CAUTION

WARNING

NOTICE

The fuel system is under pressure. Do not open the fuel system until the pressure

has been relieved. Refer to the appropriate vehicle service manual for the

procedure and precautions for relieving the fuel system pressure.

The Fuel Pump Kit, PN 2920, contains all the components necessary to set up a returnless fuel system

for the Atomic EFI. This means that a return line to the fuel tank is not required, which simpliﬁes the

fuel system installation. This kit can also be used with the MSD PN 2922 return kit, if a return line to the

tank is needed.

Parts Bag:

1 - Clamp, Pre-ﬁlter

1 - Clamp, Post-ﬁlter

7 - Clamps, Fuel Line

2 - Self Tapping Screws

2 - Fitting, 6AN, 90°

2 ft. Black Wire

1 - 14g Ring Lug

Figure 1 Atomic Returnless Fuel System.

POST

FUEL

FILTER

FUEL

PUMP

FUEL TANK

PRE FUEL

FILTER

NOTE: Hard fuel lines are NOT recommended

for use with the returnless fuel system.

CORRECT RETURNLESS (PWM) INSTALLATION

INSTALLING THE RETURNLESS FUEL SYSTEM

Summary of content (4 pages)

PAGE 1
DANGER Atomic EFI PN 2920 - Fuel Pump Kit, 525 HP Installation of this product requires detailed knowledge of automotive systems and repair procedures. Installation of fuel system parts and any fuel tank modifications must be carried out by a qualified automotive technician. Installation of fuel system parts requires handling of gasoline. Ensure that work is performed in a well ventilated area with an approved fire extinguisher nearby.
PAGE 2
INSTALLATION INSTRUCTIONS INSTALLING THE FUEL PUMP The Fuel Pump, PN 2920, is designed to support engines up to 525hp. The pump specifications will support the volume and pressure required when being used with a returnless or return style fuel system. 1. It is recommended to mount the pump close to the gas tank and in a position that is below the lowest point of the tank. 2.
PAGE 3
INSTALLATION INSTRUCTIONS 3 RETURN STYLE FUEL SYSTEM If you have decided that a returnless fuel system will not produce the best performance for your application, you will need to route a return line in the fuel system. There are many aftermarket fuel regulators available. The fuel can then be routed to the sending unit of the gas tank, or even the filling port of the tank. This will take modification. Figure 2 shows an example of a return style fuel system.
PAGE 4
INSTALLATION INSTRUCTIONS The MSD Customer Support phone lines are available 7am-5pm Mountain Standard Time Monday through Friday to answer any technical questions you may have in regards to installing the Atomic EFI or other MSD parts (915) 855-7123.