The man behind the project, Al Solaroli, has been trying to con people into this "Adiabatic process" for engines for years.
Here is the RTU company website:
http://www.rtugroup.com/
They claim to have developed a 2.5 liter five-cylinder naturally aspirated Audi engine that can develop 800hp and 1000Nm of torque, with peak horsepower at 2500rpms. Good luck finding any proof of that engine actually running that power though, this video shows a lot of cellos, people tearing down and rebuilding an engine, "censored ports", and a ridiculous dyno sheet, but no real proof of anything.
[ame="http://www.youtube.com/watch?v=vVnM8z1nX4k"]RTU eFone - Super Motor - YouTube[/ame]
For a read on Solaroli's previous endeavour in sports car racing, in which he conned Porsche out of one RS Spyder before Porsche had to take him to court to try and get it back since he never paid up despite a "$50 million investment without sponsors", see
here.
In other words, this FA20 probably does not work, and will never see an LMP car.