Hi.
If you post your captures some of the more experienced Pico users might help you.
Can you see what kind of current the affected injector is pulling.
There was a recall on the 318is regarding lucas injectors (orange band on injector). They were drawing too much current and the ECU was shutting down the injectors. The resistance was always within spec.
I know it's a long shot but you never know.
Regards.
Fiachra.