Edelbrock Pro-Tuner, User Manual

Page: 158 / 235

158
4.8 Ignition Sync Offset
Visit us at: http://www.edelbrock.com
Ignition Sync Offset Tool
It is necessary before beginning any calibration efforts to set the ignition timing
reference (Ignition Sync). The function of the Ignition synchronization is to match the
actual Top Dead Center location of the #1 cylinder - to the software so that the system
displays the timing events that the engine actually sees. (The timing light should agree
with the laptop). The Ignition Sync offset tool is used to make the adjustments to the
Ignition Sync offset even while the engine is running. While you are able to set the offset
in the setup wizard; there may be instances where you might need to make a minor
adjustment of the offset "on the fly" to make up for errors in the degree wheel, timing
markings, or erroneous timing light.
The control panel allows you to change the offset by either typing in the Ignition Sync
Offset text box or by moving the slider. RPM and Spark Advance are displayed to help
you synchronize with a timing light (if necessary). In addition, you can lock the spark
advance by clicking the "Lock Spark" button. This insures that the timing will not be
changed by the ecu while you synchronize the offset.
Tuning Tips:
Make sure your distributor is setup per instructions before setting the ignition
sync!
Run engine at about 2200 rpm with timing light on #1 cylinder and an accurately setup
timing pointer on the damper. Lock the spark by depressing the Lock Spark button. Note