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MSD Digital 7 Plus Programmable Ignition
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Manufacturer: MSD Ignition
Part No.: MSD-7531
The Programmable Digital-7 Plus is the ignition
includes all of the standard programmable features such as Individual
Cylinder Management/Step Retards/Rev Limits/Shift Points and more are
included in the Plus version but you also get more. Much! A MAP sensor
is required for the boost circuit. The ignition is supplied with wiring
harnesses, mounting hardware, an RS232 computer harness and the
Pro-Data+ software.
No Timing Compromises - Ignition timing is always
a compromise between cylinders. The dynamics of the flow of air and
fuel into each cylinder is never exactly the same no matter how much
machining magic has been done. This has always caused top engine
builders to compromise their ignition timing. With the Programmable
Digital-7's advanced Individual Cylinder Management system and other
exact timing programs you will never need to compromise again.
ICM
Timing Control: Adjust the ignition timing in each cylinder! Program up
to 5° of timing retard into each individual cylinder in 0.1° increments.
Run Curve: Plot a timing curve in 0.1° per 100 rpm throughout the entire rpm range of your engine
Launch
Curve: Program a timing curve exclusively for the launch! If the
starting line conditions are less than adequate, you can set a
completely different curve for the launch!
Launch Retard: Retard the timing up to 15° for 0-2.5 seconds after you launch the car.
Step Retards: Three steps of retard that can be activated with nitrous solenoids or switches.
Gear Retards: Program a timing retard up to 5° with every gear change!
Start Retard: Ease engine cranking with an adjustable retard during start up.
Power
- No other ignition system comes close to matching the output power and
the Individual Cylinder Management timing system of the Programmable
Ignition. To effectively handle all of the ignition's tasks, a 15mHz
microcontroller, reviews, manages and analyzes every trigger signal up
to 15,000,000 instructions per second! Capacitive discharge circuits
combined with an IGBT Coil driver deliver incredible cylinder
pressures. Below 3,300 there is of course MSD's powerful series of
multiple sparks. This spark series burns in the cylinder for over 20°
of crankshaft rotation resulting in improved combustion for a smooth
idle, great throttle response and increased power.
RPM Controls -
Monitoring the engine's rpm allows you to set shift light points,
activation points and rev limits. The Programmable Digital-7 Plus has
MSD's proven Soft Touch rev limiting controls built in and lets you
program several rpm features.
Three Step Rev Control: Program rev limits in 100 rpm increments for burnout, launch and overrev protection.
Shift Light: Program a different rpm setting for each gear change for up to six gears.
RPM
Activated Window Switch: Activate a circuit at an adjustable rpm such
as a nitrous solenoid, then set another rpm level to deactivate the
same circuit.
Other features include:
Map a complete timing curve for every gear.
Stage retards can be set to ramp the timing.
Updated X-Y plots with interpolation for smooth changes.
View all ignition events in a new Launch History window including the retard sum, manifold pressure, RPM, shift points and more.
Select the RPM limiter value in RPM/Seconds.
Vacuum advance and boost retard is selectable through a MAP sensor.
There is a cam sync output for fuel controllers or data acquisition.
Program your engine's firing order for ease of setting the cylinder-to-cylinder timing.
Automatic magnetic pickup compensation for crank triggers or distributor pickups.
Output to activate a device through RPM, time or pressure inputs.
An upgraded microcontroller runs at 40mHz enabling timing accuracy within 0.1° and +/- RPM at up to 10,000 RPM
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