Kz900 ignition timing with dyna s ignition

Does the timing need to be any different with dyna s electronic ignition compared to standard points ignition on my 1976 KZ900 A4?

You set it at full advance then adjust the idle down.
Steve

Ignition timing stays the same.
40 degrees full advance.

What is that in mm btdc please?

Haven't a clue.
You just use the timing marks on the advancer and the ignition case.
If you need to comfirm the marks are 100% accurate use a degree disc but for road motors the factory marks are good enough and a degree either way won't make a difference.