It is an excellent tuning tool, but it requires some work on your part and you will be very happy. Datalogging device or OBD2 scantool that can display o2 signals,fuel trim both long term, short term, maf voltage. outputs can be configured vvl, meth, nitrous, able to connect aem wideband, datalog.
OBD2 cars need o2 map to be utilized, especially 2 bank systems(3,4 o2 sensors.) AEM has very detailed videos on the AEM FIC.
Follow the videos, and check their forums. It isn't as bad as you think.