PN4217 Datasheet, PDF (1/8 Pages) Mallory performance club – MSD Single Cylinder Programmable Ignition

MSD Single Cylinder Programmable Ignition
PN 4217
Parts Included:
1 - PN 4217
1 - PN 4217 Wire Harness
1 - CD Rom 9609
1 - Parts Bag
1 - Serial Cable
WARNING: During installation, disconnect the battery cables. When disconnecting,

always remove the Negative cable first and install it last.
The Single Cylinder Programmable Ignition is designed for use on a variety of single cylinder motorcycle
type 2 and 4-stroke engines. It delivers increased spark energy and voltage through the entire rpm range
and provides the user with a variety of programmable functions including mapping two timing curves,
setting a launch rpm limit, using TPS for timing control and more.
To program the PN 4217, MSD includes the Pro-Data+ software on a CD along with a 6-to-9 pin PC harness
for easy programming on a PC. The ignition can also be programmed with MSD’s optional Hand Held
Monitor, PN 7550.
TIMING FUNCTIONS
The Programmable Ignition gives you control over the timing functions of your engine, making it imperative
to understand ignition timing. Following are a couple basic explanations of ignition timing.
One timing setting is not ideal as engine rpm and loads change. By adjusting the ignition timing you can
improve performance by matching the ideal timing with the engine’s needs. To achieve the optimum
performance, you’ll need time for testing and tuning.
Total: Total timing references the Start timing along with the available advance. As an example, if you have
10° of Start timing and add another 22°, the total timing will be 32°.
Start Timing: The amount of timing advance that is in place when the engine is idling or during start up.
Available Advance: This determines what is the most timing advance available. This is determined by the
Pickup Width, or the duration of the pickup signal. See “Pickup Width” in Programming Features.
PROGRAMMING FEATURES
TIMING CURVES
There are two timing curves that can be switched between through wire activation. Both Timing Maps allow
up to 20 points to be plotted in 100 rpm and 1° increments from 0 – 16,000 rpm and 0-50°. The Brown/White
wire is used to switch between Curve A and B. When it is connected to ground, Curve B is selected.
These curves can also be set up relative to TPS voltage input from closed throttle to Wide Open Throttle.
See TPS Timing Curve on next page.
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