Hi Mitch

I see you are in Lancashire, anywhere near Burnley, thats where my dad came from!

I think the implication of the delay for the fuel from the injector to getting into the cylinder, based on airflow and some inertia of the fuel from the injector, means that one can start injecting before the exhaust valve closes on the basis the fuel will arrive into the cylinder, just before it does...

That will/should give better drive-ability because you are linking injector timing to the cam events, better economy as well, that also probably co-insides with good, if not max, intake airflow speed as well.

Cheers

Kevin