Lutach know quit a bit this setup ;).
It's the brushless ESC named "Xerun" designed and manufactured by HobbyWing.
http://www.hobbywing.com/english/Art...?ArticleID=409
The GT Speedpassion (import by Schumacher) is basically the same stuff with few more options in the software.
It work great and many competitor in 1/10 scale found in this one a true alternative to the common LRP and Novak system