I am going to try this on the up coming RX8 P-port engine on
the dyno.

Attached is a chart (DRILL2.TXT) for a linear increase in  area
along with the drill diameter necessary to drill that area.
The first column is the area of the hole and the second
column is the drill size.

The idea here as the slides moves more towards WOT
the port area and air flow increase. This requires more
and more fuel. The amount of fuel injected is proportional
to the area of the vertical small hole in the slide.
There fore the fuel holes will get bigger and bigger as
the slide moves more toward WOT. Leaning will
be done by the pressure regulator.

Next step is plot the port opening as a function of slide
travel. Not necessarily linear.

If this works it is a super cheap, low pressure fuel injection.
Very similar to the Ellison throttle body and Posa aircraft carbs.

Paul Lamar ...No rotor no motor.

Paul,

Not trying to complicate things here but......

In normal operation there is going to be three basic operating throttle
settings,
1    idle and just above for taxiing
2    cruise
3    WOT
by the application of brain power could there be an allowance made to make
the change of fuel delivery non linear so that as you pass through the
intermediate throttle settings you use oversize orifices and then smaller
ones to correct for the larger ones, in effect building in an accelerator
pump. As you transient through the the mid range settings your mixture
spikes rich and then drops back to normal at the higher settings.

John Gibbons

Yes. One thing about this approach you have a lot of flexibility
in the fuel map as a function of throttle opening.
I will probably drill all the holes under size and sneak up
on it. If you plan on changing power a lot you might
want to jack up the fuel pressure to full rich.

Paul Lamar ...No rotor no motor.

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