Josh, I’m afraid you are wrong.
Technically you are right, if the sensor is a real differential pressure sensor.
But the problem is that SPD33 is not a differential pressure sensor, but rather an air flow sensor. (It measures the cooling of a resistor). As far as I know ,the current implementation in the code is for 1.5mm diameter pitots. Larger diameter will give you false measurement. Plus tube length will count as well.