[Christ]

That would only work out if the OEM filter wasn't capable of flowing the amount of air necessary at a given throttle angle.

The engine, in our case, hardly ever requires more air than the OE filter can handle flowing, therefore there is no restriction. You can test this with a simple vacuum gauge on the intake pipe after the filter.

Since the K&N isn't flowing any more air than the OE filter was, due to the requirement for air not changing, there is no more fuel being injected, and thus, no change in economy or power.

Engines work on demand, not supply. If the engine isn't asking for more flow by increasing manifold vacuum, it's not getting any more. Period. Full Stop.