obd app

I have the OBD Fusion App and want to make sure I input various info accurately so the fuel efficiency, power and torque calculations are accurate. I'm working with RC on tuning. Does the 3.3T contain a Mass Airflow Sensor? What is the fuel calculation method? 1) None 2) Mass Air Flow rate 3)...

Considering purchasing the Carista bluetooth adapter and app for data logging for my RaceChip. Working with RaceChip on additional maps for my bolt-ons as well as WMI Does this work well with Stinger? Any other recommendations? Racechip told me they had better luck with the Carista over the...