Does a throttle bodie setup still need an afm?

[NoHachi]

You can use both with and without..though blacktops originally run off a map sensor setup. With these kinds of things its usually correct that if you have to ask, you're probably best of not tackling a project like this any time soon.

Luckily there is already some info available on the forums to get you up to speed: try searching on keywords like MAP, AFM and TPS, that should already come up with some usefull stuff and answer your questions.