MSD 7562 Programmable Launch Boost Controller Installation - Manual (Page 8)

8 INSTALLATION INSTRUCTIONS
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Both boxes have an On and Tier button. Clicking On, brings all of the traces to the Window.
Selecting Tier positions each trace so they are not sitting atop each other. The Clear button will
remove all of the traces that are not turned on. The History Analyze section also has a copy button
which copies everything from the Trace section into its list.
HISTORY ANALYZE WINDOW
PSI Gauge Reference: Key in the atmospheric pressure so there will be a reference when viewing
the PSIg or InchHg values in the History Files.
Value Column: There is a Value column for each trace in the History Analyze window. This lets you
select how to view each trace.
Note: Not all of the options will work with every trace.
Value Plot the trace data in the same units as the Trace Window data.
PSIg Pounds per Square Inch Gauge. Best used with the MAP trace. To use this trace, the
present atmospheric pressure must be put in to the Pressure Gauge Reference at
the top of the History Window.
Average Column: This column filters the data. The setting is defaulted to one, meaning that you
are viewing the raw data the same as in the History Trace Window. Increasing this number averages
the samples together for a cleaner, easier to read trace. This is done by averaging the trace data
which is 720° (crankshaft) average data. The Slope function requires an Average setting of 5 or
more while the RpmDiff trace is best if viewed with an average of 5-10. Note that too much filtering
will distort the data. The Map and Boost Traces are best viewed with an average value of 10 - 20.
Color Key: To change the color of a trace, click the pointer just to the right of the value column for
each trace in the Trace or Analyze section. This will bring up the color chart.
GETTING STARTED AND TUNING
At this point, the Controller should be installed, wired and plumbed to the turbo system. There are
several checks and steps required to set up the Controller for your application. The Controller will
take some time to tune to match your engine’s output. There are several examples with information
to assist you in setting up your Controller.
Tach Signal: The Controller requires a tachometer signal to enable the solenoid valves to operate.
The tach signal can be from an ECU output or ignition tach-output, typically a 12-volt pulse. On
some DIS equipped vehicles it is recommended to use the MSD 8913 DIS Tach Driver.
PSIA Pressure: Note that since a Manifold Absolute Pressure (MAP) sensor is used to measure
the boost pressure, the units of programming values are in PSIA. This means that the boost pressure
is a value of pressure greater than the atmospheric pressure. Atmospheric pressure is taken at
power on by the Controller and displayed as RefPsia on Pro-Data screen. Also note that the MAP
sensor should be installed close to the manifold with stiff tubing for accurate pressure measurements
and control.
Gauge Pressure: The Launch Controller can also be programmed to accept a 75PSIG sensor for
high boost applications. This means that all units would be in gauge units relative to atmospheric
pressure.