A smaller throttle body or other restriction would actually make it easier to make more boost pressure as measured before the TB. The argument you posted is flawed and doesn't make a whole lot of sense if one thinks of the flow characteristics of a intake manifold relative to mass flow.

Imagine putting the intake to the TB directly in a pressure chamber and pressurizing it to 2 atm (14.7 psig at sea level). The same volume and shape of air will flow through the intake, but except now the charge is twice as dense. Does the fact that the intake manifold flows better still not matter?

 

Very interesting points I haven't thought about. However, Pressure and Flow are two totally separate things. Just because a chamber of air is pressurized, it doesn't change physical limitations of the path of flow. That is not to say that you can't force more air through because it's now pressurized to get more volume through. Where are the limitations and whether or not this can be sustained to find out what works best is obvious what we are after. I just know that pressure can translate to heat so that's never a good thing and I know the high pressure can also be an issue on the connectors. I'm sure there are pros and cons in each scenario; best bang for the buck without jeopardizing reliability is what we want

 

I guess it depends where the "choke points" are.
A wide open TB at WOT, that's what 60mm or something? most of the bored out/ported ones are 64mm. The TB is probably the smallest area the charge has to flow through, except of course as it exits the turbo itself.
Can we assume there will be a pressure drop across the TB for any given amount of flow?
Similarly, if the intake manifold has a larger volume, for any given amount of flow then the pressure in the IM should be less.

so, just looking at those two parts - say a ported TB and an IM with more volume/larger runners... for any given pressure the combination should in theory flow more air through it.

Of course, that is ignoring all the other possible restrictions in the system. I'm sure for a lot of us the very hot and hence high volume exhaust gases and our 3" or smaller O2 housings and our turbine housings hold things up more than the intake side.
But every little bit helps right?

 

PM me the price for this thing!

 

1. Post from 2009; no longer vendor here.
2. Part does not exist; never made it into production.