PrimeWire

You can now watch the entire Engine Masters Season 8 Episode 9 movie online in high-definition quality, complete with English subtitles for a better viewing experience. Best of all, there’s no need to download anything—simply stream it directly from your device anytime, anywhere.

This one's all about how the length of header primary tubes can affect the power curve. The guys explore all the different ways an engine expels its exhaust -- mainly the negative pressure wave that pulls burnt gases from the cylinder, how that changes how much torque is made, and where the power occurs.