New Process Decarb Engine

Just watched a UK Wheeler Dealer TV program, restoring a Jag Xk8. The mechanic used a "modern and new" process to decarbonize the engine which increased performance and reduced emmisions. I found this advert on youtube, (see link below).

Has any Crossfire owner used this process or something like it.

Can anyone recommend it??

TerraClean Engine Decarbonizer - YouTube