I know you want out, but I still want to learn something.
Where did you get the above info from? It is in conflict with wikipedia that says

 

There is no mass air flow sensor on our 7.3's

 

Wiki is talking about a gas motor, not a diesel. Just like Google, wiki has some good info but not all the answers to every question.

 

If you read back, my 99 model has air temperature sensor and air pressure sensor.
They can do the same job MAF does.
Discussion diverted to all diesels anyway, since per what I notice members posting in this topic have 3 different version of Powerstrokes.

 

If you want to learn something, here you go.

Below is a graph of the stock PCM fueling from a VDH2 code PCM (from a 2002 7.3L engine). The numbers on the left and right of the chart is fuel in mg/stroke. The numbers on the bottom is throttle position in AD counts (from 0 to 1023). The numbers in different colors on the far left are RPM ranges, and are depicted on the graph.

As you can see, input more throttle for any given RPM range, and your fueling demand increases:



There are tables in the PCM that use boost levels to incorporate some fueling limits, they are the "Low Boost Fuel (Sea Level)" and "Low Boost Fuel (Altitude) tables. This is to reduce black smoke output at lower boost levels, and to account for turbo lag at low and high altitudes. That is pretty much the limit of their functionality. Otherwise, the PCM looks at RPM's and throttle input, and calls for a mass fuel desired. It later takes that mass fuel desired and determines injection pressure and injector pulsewidth.

But there you have it in a nutshell.

 

Except they don't. If you look at the tuning on the PCM, you'll see that.

Yet all 3 versions work the same way.

 

This forum hates me. That's twice now that it's resized my images to be much smaller and unreadable.

Bah!!!

 

Let me try to post the graph again:



That might be a tad more readable.

 

You quoted my question about MAF work and reply about Powerstroke who doesn't have one

 

Seriously. Get a grip dude.