It's an additional component. It adds extra weight that you're always lugging around. Engine, pipes, pump etc. And it's weird that it is allowed in Europe, as

It's an additional component. It adds extra weight that you're always lugging around. Engine, pipes, pump etc. And it's weird that it is allowed in Europe, as it has more emissions than a normal engine. https://www.sciencedaily.com/releases/2021/09/210909123913.htm https://www.sciencedaily.com/releases/2021/09/210909123913.h...