2 selecting tuning maps and settings, 3 ignition timing maps – Zipper's Performance 309-575 User Manual

Page 8

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EI5011.doc

2.2

Selecting Tuning Maps and Settings

Figure 2—Tuning Maps Window


In the Tuning Maps window, clicking a map will display the map in the
window to the right.

Note: If a plus symbol [+] is next to a category, click it to expand your choices.


The following maps can be selected:

2.3

Ignition Timing Maps

Timing vs Engine Speed

This is the map of spark advance (Y-axis) versus engine speed (X-axis) for
the front cylinder. Higher values of spark advance can improve response,
efficiency, and power until the point of detonation, which reduces power and
can damage the engine.

Rear Timing vs Engine Speed

This is the map of spark advance (Y-axis) versus engine speed (X-axis) for
the rear cylinder in relation (+/- 10 degrees) to the front cylinder. Since the
rear cylinder on an air-cooled V-twin engine generally runs hotter than the
front cylinder, the rear cylinder often needs a little less ignition advance than
the front.

Dwell vs Battery

This map is used to optimize ignition and power consumption for different
types of coils by changing the coil saturation time. NOTE: Extreme caution
must be used when making changes to base dwell as damage to the coil
and/or ignition module may result Do not change these settings without
factory guidelines.

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