A few moth's ago I bought this cd on www.championrc.com, and it's awesome. This cd is surely all you need to make your T-Maxx fly past even the revo. I raced a friend with my hopped-up T-Maxx when he had only a few mods. His reply was, " Hey I see you got your new .21 size motor." I told him that it was all just because of this cd, I still had the stock motor. The best thing is that there is NO Motor rebuilding or anything. Even people with single digit IQ's could figure out! IT ROCKS!!! + It only costed me 20 bucks! It has over 60 tips with pics! This is easily the bang for your buck that ever exhisted for the T-Maxx!