I ordered through the official site six months ago, the result is noticed immediately. The engine began to run smoother and quieter. You know - I share your opinion on the Ministry (and the Government in general). Because what I saw was that I drove more and my consumption dropped by 30%. Crazy.
And those who say that the result is not real - try it!
By the way, I heard that the certificate will not be extended after 2016, because some sorts of irregularities in our relations with the United States