Breathing: something that is unanimously regarded as important. Trees breathe, you breathe (I hope), even cars and trucks breathe.
If you're an auto-enthusiast, you don't think too much about those first two facts, but you're always thinking about that last one. After all, an engine in its simplest form is an air pump. That means the amount of power an engine makes is largely determined by how much air it can pull in and push out. There's a reason that intakes and exhaust are often the first modifications on cars and trucks.
Intakes and exhausts aren't the only way to increase the power and efficiency of an engine. If your vehicle has forced induction, you know there are a lot of components between the outside air and the engine's cylinders that can have major effects on power. If there are two turbos in that equation, like the 3.5L EcoBoost found in the 2017+ F-150, those components are even more critical to your engine's respiration.