What i don't get is why you would not spend the extra $60 for ms II when it is obviously much more feature laden with out the use of extra external cards and there is a card in the late stages of development to provide sequential fuel injection, which will only work with ms II when it's done. as well as the new DIY wideband O2 board on the way, again only for ms II. that seems like a good investment to me. you never know what you might want to do in the future.