Nope. Go into ecu setup and choose "Set ignition timing/sync"
Select 'lock timing' and choose an advance setting that you like (0*/10* normal) then press enter.
Connect your timing light and use the AEM advance/retard buttons to change the timing.
Note: It is recommended to NOT adjust the CPS to set timing. Set it to the middle of adjustment and lock it down for good. Not sure why, but I don't really care so long as the car runs well.