Was it the same guy who invented DEI?
abload.de/img/dei_with_intercoolingd5spz.jpg
I believe its the same as all the other things like 5-Stroke engines, people say they are better, but if they would be better IRL, why is noone using it?
The best example i have is the “turbina kowalskiego” (Kowalski Turbine)… it claimed to make everything better, but there were no measurements about performance and mileage, just claims.