As i said before, go to the following link and compare.
For the presentation of the new SIRIO S12TRP EVO2 go to the following web page
http://www205.pair.com/kyosho1/kweb/ (it is Kyosho France) under Moteurs, it is a comparison with the old engine, it is in French but you can tarnslate the page with altavista transalator.
AFM