MSD 2910 Atomic EFI Master Kit Installation - Manual (Page 3)

INSTALLATION INSTRUCTIONS 3
M S D
• W W W . A T O M I C E F I . C O M • ( 9 1 5 ) 8 5 5 - 7 1 2 3 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4
Power Adders: The Atomic TBI can operate in conjunction with wet nitrous systems as well as positive
manifold pressure supplied by a draw-thru or blow-thru forced induction system. For nitrous,
there is a program that allows you to set a target air/fuel ratio when the nitrous is activated as
well as a selection to retard the timing (when timing control is incorporated) Note that a wet
nitrous system requires its own fuel pump to supply the additional fuel required with nitrous.
For forced induction applications there is a target air/fuel ratio setting which takes effect when
operating under boost. These options are explained in the Advanced Settings section, page 13.
FUEL SYSTEM REQUIREMENTS
The following details pertain to the fuel system requirements. Installation steps specific to the fuel
system are covered in the Fuel Pump Kits supplied separately from the Atomic TBI, PN 2910, Kit.
The Atomic TBI requires a high pressure fuel pump system. Depending on your engine combination,
the Atomic TBI requires a minimum of 42-48 psi to operate and it can be used with a return or returnless
fuel system. When selecting a pump, regulator and lines, be sure each component is designed to
perform at high pressure. MSD offers a fuel pump, hose and accessories to complete your installation.
Following are some guidelines in helping set up a fuel system for your Atomic as well as components
available separately from MSD.
• The Atomic is capable of operating with a return or returnless style system. For best results, MSD
strongly recommends an in-tank pump. Installing the fuel pump in the tank results in quieter
operation, less chance of cavitation and a reduction in pump temperature.
• When running a returnless fuel system (Pulse Width Modulated), it is strongly recommended to
install the pump in the tank. It is recommended to use an MSD Atomic Fuel Pump, PN 2925 or PN
2926.
• If mounting the pump in the tank is not an option, install the pump as close as possible to the tank.
Within 2-feet of sending unit is recommended.
• Do NOT use hard line when plumbing the fuel system. When using a PWM fuel system, cavitation
could cause unstable fuel pressure resulting in poor engine performance.
• When used, an adjustable regulator must be installed on the return side of the throttle body.
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.
NOTE: IF RUNNING A RETURNLESS
FUEL SYSTEM, THE PUMP MUST
BE MOUNTED IN THE TANK.
RETURN LINE
MSD ADJUSTABLE
REGULATOR
NOTE: DO NOT USE TUBING (HARD FUEL LINES) WITH THE ATOMIC EFI SYSTEM.
FUEL SYSTEM EXAMPLE
Figure 1 Atomic Return Style Fuel System.
WARNING: MSD’s Push-Lock fittings are designed for use with the MSD fuel hose only. Do not
use the MSD fuel hose with other fittings. Do not use MSD Push-Lock fittings with
other fuel hose. Compatibility issues may cause fuel leaks.