Im boosting my d series, im plaaning one using the greddy e mangage, what woudl work better with that for a/f a afc or a WbO2

 

emanage is what is gonna allow you to control fuel, the WBO2 is whats gonna tell you your a/f. you don't need the afc unit if you're gonna be using the emanage.

also why not look into the rom editors out there... they have better fuel and ignition control than the emanage.