Chris tree'd me. He's 'zakly right. A trick question at a gathering of Diesel fans - "How many HP does a Detroit 2-stroke make without a supercharger?" The answer is "zero" - They won't run. Most Diesel fans haven't messed with a DDA (Detroit Diesel Allison, the name of the company when they were making these) and so folks haven't any experience with them. We ran one on the dyno and it made a ton of lb/ft but was, as noted, VERY high in emissions.

Another Diesel trivia question though my info is a bit dated: Last I heard, Penske owned Detroit Diesel and was making them in MI. I did a tour of their emissions facility as we looked for a correlation offset between their lab and ours though I can't remember for the life of me what we finally determined.

Dan