Injectors timing

[A-Team]

Hi all,
I use one Motec M4 on my Lancia Delta Hf intégrale.
I want optimize the injection timing. I use RC Eng 750 cc injectors.
Timing angle Inlet : 8° BTDC and 42° ABDC

Can you advice me for the setting from phasing for my fuel injection.

How does one optimize the injection timing?

Regards Ludo