Mm-hmm.

Well, the collector and the header actually has a, a, a major function.

It has a scavenging effect.

So as one, one cylinder's exhausting, it's creating vacuum on the other cylinder.

So it's helping the intake charge, and that's where the intake valve and exhaust valve overlap comes into play'Cause you can't take air, air doesn't move instantaneous from point A to point B.

Air has mass, it has weight.

It takes time for air to move from high pressure to low pressure, and it doesn't happen instantaneously.

Right.