Would this do anything at all?

[ced381]

Would "ram air" under the diffuser like this give any advantage whatsoever?

Poorly drawn idea...

[jordangp]

I would of thought internal drag aswell as the velocity of the airflow in the pipe slowing down, would reduce any possible benefit, perhaps hinder from the drag.

[stringy]

I suspect it would be more likely to come outa lot further forwards and feed the air under the sidepods...

[ced381]

Good observation. Thanks!

[bone]

I would of thought internal drag aswell as the velocity of the airflow in the pipe slowing down, would reduce any possible benefit, perhaps hinder from the drag.

if you want to blow something, indeed
but it might be used to decrease drag (like the F-duct), drag will suck air through no matter the diameter (the bigger, the more of course)

[Just_a_fan]

I could see the air being ducted to the leading edge of the cockpit to form an aero-screen in front of the driver to improve flow quality around the cockpit and thus rearwards of it...

[MIKEY_!]

I suspect it would be more likely to come outa lot further forwards and feed the air under the sidepods...

Or maybe even into the sidepods, reducing the size of the sidepod inlets (very slightly)

[bhall]

Would "ram air" under the diffuser like this give any advantage whatsoever?

None. If anything, it would hamper the car. There's not enough air flow over the top of the nose to cleanly force ducted air to the back of the car, much less force air to the back of the car through those bends. All it would do is increase drag, but, for exactly the same reason, probably not by too much.