AEM 30-6905 Universal Programmable EMS-4 - Manual (Page 147)

Page 147 of 279 EMS-4 Install and Tuning Guide_Rev 1.6
Ignition Timing Sync Wizard
The PC must be connected to the EMS and the engine must be running. To minimize ignition
timing fluctuation, the timing from the EMS can be locked at a given setting. Select or type in a
value then click the Lock Ignition Timing at checkbox. Next measure the ignition timing at the
balancer with a timing light and compare the actual reading to the commanded “locked” value.
If they differ, use the Advance or Retard Timing buttons to adjust the actual value until it
matches the locked timing value. Perform this procedure during cranking then re-check it after
the engine is up and running.