Always thought the turbos on my VW TDIs were tiny. And then to see one on my Kioti! But, Mighty Mouse isn't anything to laugh at. Turbos are ubiquitous for a reason: easiest, most efficient way to reliably bump up power.
Spending lots of hours running my Kioti I'm glad that it's got emissions "junk" on it. I'm a diesel guy (I've got plenty of diesels) and I can readily appreciate the value in a quieter and less stinky one.