If I'm not mistaking, you mentioned in a post before about possibly doing a tune. Well, the spade (auto cal) hand held thing is pretty much an obd II scanner. It reads codes and monitors real time. Maybe look it up to see if it does what you're looking for so you can save some money by not having to buy redundant pieces of equipment.
Edit: or maybe I can help if you want to know something specific I can hook mine up and see