Msd 7531 Programmable Digital-7 Plus Installation- User Manual
Msd 7531 Programmable Digital-7 Plus Installation– User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – WIRING; the coil positive terminal.; PROTECTION; operate once the surge or polarity is corrected.; LED INDICATOR; White wire is not connected.
- Page 3 – Acquisition Record function.
- Page 4 – Locate and open the CD Drive.; SAVES AND TRANSFERS; There are two ways to save your files.; Figure 1 Wiring the Programmable Digital-7 Plus Ignition.
- Page 5 – one or just a couple modifications this works well.; PROGRAMMABLE FEATURES
- Page 6 – REV LIMITS; and BurnOut limits are off.; REVLIMIT CURVE; RPM: Adjust from the Rev Limit chart of graph view.; RPM SLEW
- Page 7 – SlewOff: Activates the Slew Rev Limiting feature. Default is Off.
- Page 8 – Figure 3 Different Retard Activation Options.; TIME
- Page 9 – GEAR SELECT; back on it, the ignition will not count it as a gear change.; GEAR RETARDS; and copy the curve, then select Paste All.; BOOST RETARD CURVE; Note: The Boost Retard Curve default is 0° retard.; 0psia or 45psia sensor. Default is 15psia.
- Page 10 – ADVANCE
- Page 11 – RPM On: Rpm that the circuit is activated; SHIFT LIGHT; RpmHi: The high rpm for the launch light program.
- Page 12 – ALERTS; to show and how often. The alerts are No Cam Sync and Low Battery.; ACQUIRE
- Page 14 – DEFAULT V8 MENU; MSD Digital Race Ignition.
- Page 15 – CONNECTING THE REV LIMITS; record just before the car stages.; REV LIMIT WIRING THE SPOOL REV LIMIT; Light Blue and Dark Blue wires are connected to 12 volts.; Figure 4 Typical Wiring of Rev Limits.
- Page 16 – Figure 6 Acquisition Charts.; ACQUISITION; -4 to allow opening up to four different acquisition file windows.
- Page 17 – and dragging it to the Analyze box or any other Trace Box.; TRACE BOX AND ANALYSIS BOX; from the Analyze and another 32 from the Trace box.
- Page 18 – step retard is active.; HISTORY ANALYZE WINDOW; the PSIg or InchHg value in the History Files.
- Page 19 – filtering will distort the data.; TIPS ON HELPING PROGRAM A SLEW RATE REV LIMIT; clutch setup and gear ratio are all consistent.
- Page 20 – Limited Warranty; Service; Proof of Purchase must be supplied for verification. After; issued to them before; M S D; TECH NOTES
M S D
• W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4
Parts Included:
1 - Ignition Control, PN 7531
1 - MSD Pro-Data+ CD Rom
4 - Vibration Mounts & Screws
1 - Shielded Cam Sync Harness
1 - 9-Pin Computer Harness
Accessories
Hand Held Monitor, PN 7550
Inductive Cam Sync Pickup Kit, PN 7555
Non-Magnetic Cam Sync Pickup Kit,
PN 2346
Manual Launch RPM Control, PN 7551
Digital Shift Light, PN 7542
MAP Sensor, see page 9
Replacement Harness, PN 8855
Single Pole/Single Throw Relay, PN 8961
Double Pole/Double Throw Relay, PN 8960
WARNING: During installation, disconnect the battery cables. When disconnecting, always remove
the Negative cable first and install it last.
Note: Solid core spark plug wires cannot be used with an MSD Ignition Control.
OPERATION
DIGITAL OPERATION
The MSD Programmable Digital-7 Plus uses a high speed RISC microcontroller to control the ignition’s output
while constantly analyzing the various inputs such as supply voltage, trigger signals and rpm. The high speed
controller can make extremely quick compensations to the output voltage, multiple spark series, timing and rpm
limits while maintaining accurate timing signals to within +/- 0.1° and +/- 10 rpm. The circuits and controller of
the ignition have been thoroughly debounced and suppressed to create protection against Electro Magnetic
Interference (EMI).
CAPACITIVE DISCHARGE
The MSD features a capacitive discharge ignition design. The majority of stock ignition systems are inductive ignitions.
In an inductive ignition, the coil must store energy and step up the supplied voltage to maximum strength between
each firing. At higher rpm, since there is less time to charge the coil to full capacity, the secondary voltage falls short
of reaching its maximum energy level which results in a loss of power or top end miss.
The MSD Ignition features a capacitor which is quickly charged to 520 - 535 volts and stores its energy until the
ignition is triggered. With the CD design, the energy sent to the coil is always at maximum power even at high rpm.
MULTIPLE SPARKS
The MSD produces full power multiple sparks for each firing of a plug. The number of multiple sparks that occur
decreases as rpm increases, however the spark series always lasts for 21° of crankshaft rotation. Above 3,300 rpm
there is simply not enough “time” to fire the spark plug more than once, so there is only one powerful spark.
1 - Mag Pickup Harness, PN 8860
1 - 12-Pin Harness
1 - Coil Harness
1 - Power Lead Harness
Programmable Digital-7 Plus
PN 7531
ONLINE PRODUCT REGISTRATION: Register your MSD product online and you’ll be entered
in our monthly 8.5mm Super Conductor Spark Plug Wire give-away! Registering your product
will help if there is ever a warranty issue with your product and helps the MSD R&D team create
new products that you ask for! Go to www.msdperformance.com/registration.
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Summary
2 INSTALLATION INSTRUCTIONS M S D • W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4 WIRING Ignition supply wire. Connects to battery positive (+) terminal or battery junction. Note: Do not connect to the alternator. Ignition...
INSTALLATION INSTRUCTIONS 3 M S D • W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4 Limit Lt Green Accessories Dark Blue This wire activates the Launch Rev Limit and is the main reset wire for several features of the Ignitio...
4 INSTALLATION INSTRUCTIONS M S D • W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4 PRO-DATA+ INSTALLATION OF THE PRO-DATA+ SOFTWARE 1. Insert the installation CD Rom into the CD drive, wait up to 30 seconds, the CD will aut...
