Many thanks Andy!
Your answer is very clear and I have a more closed approach of what I need to do with the wire splice and HRC key card.
That was all I want to know about how to redestrict the engine of my tiny baby. I heard some people made the wire splice in different way and get the speedo works as ususal, but I think this is not simply work to explain on the web.
The problem using the HRC card and can´t have the speedo working are the traffic radars... too much common nowadays, and a high risk to get a traffic ticket!!!
But as you said, you have to paid a fee to get all the power of the bike.
I will consider it before get the HRC card.
Best wishes.