MSD 2910 Atomic EFI Master Kit Installation - Manual (Page 15)

INSTALLATION INSTRUCTIONS 15
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
THROTTLE BLADE ADJUSTMENT
There is one more adjustment to review prior to starting the engine for the first time; the Throttle Blades.
This is a setting that varies between engines to improve idle characteristics due to engine and cam size.
There are two adjustments that determine the position of the
throttle blades, a front and rear (see Figure 15). Note that the
front and rear throttles need to be opened the same amount
to produce the best idle.
For initial start up, MSD recommends the following:
• On a street/stock type cam, turn the throttle screws ½ turn
from the point where the blades first start to move.
• For a mild cam, turn the screws one additional turn from
the point where the blades first move.
• For Larger cams, turn the screw 1½ turns from the point
where the blades first move.
Once started, you will be able to monitor the IAC count (Idle
Air Control) on the Handheld in the dash mode to improve
or tune the idle. The IAC motor controls the amount of air flowing through the idle air circuit. It varies
depending on the engine and operating conditions. When the engine is at operating temperature, let
the engine come to an idle and monitor the IAC count. This count will range from 0 – 175 and at idle,
a rule of thumb would be 10 - 20 with a manual transmission and 5-15 in gear with an automatic (less
is ok, even 0).
If the count is too high, the IAC is trying to open too much and the blades should be opened to help
with additional air flow at idle. Make any adjustments equally in front and rear using small steps such
as a quarter turn at a time.
Figure 15 Throttle Blade Adjustment.
REAR
FRONT
PRE-START CHECK LIST
At this point,you're ready to start the engine. Before attempting to start your vehicle with a newly installed
Atomic EFI system, MSD recommends running through the following check list to help ensure a safe
and successful start.
• Double-check all wiring.
• Power and Ground are run directly to the battery.
• The small Red “12V switched” wire from the Power Module will have power during both Key On and
Cranking.
• The Power Module, fuel pump, fuel lines, and wires are securely mounted away from heat sources
and pinch points.
• Wide Band Oxygen Sensor is installed in a proper location.
• There are No known exhaust leaks.
• Throttle linkage is complete and operational from the pedal.
• Handheld receives power during Key On.
• You have completed each step of the Initial Setup in the Handheld.
• At Key On the fuel pump primes.
• There are No fuel leaks when system is under pressure.
• Check for proper fuel pressure on Handheld Dash. If you do not see fuel pressure, you may need
to prime the pump more than once.
• When ready to start engine, watch for Engine RPM on Handheld Dash to know that Atomic is getting
proper input.
• Timing feature is disabled (unless using timing feature).
• Be prepared to adjust the throttle blades as shown above.
START YOUR ATOMIC FUELED ENGINE!