What he meant is on some engines the fuel flow gauge is actually a pressure gauge with a calibrated scale on the dial to reflect fuel flow. Have a look at all the classic Beech panels and that big green faced fuel flow gauge is the one. This works a treat on the TCM engines.
So hang on - fuel flow is displayed as a product of pressure in Continentals only?
The BE95 (Travelair) has Lycomings yet fuel flow gauge is pressure, or that's what it says on the gauge anyway (there's a little red line saying 10.5psi or something, can't remember the number)
Does this just mean the gauges are plumbed in to a different part of the fuel delivery system?