Assuming stock air intake tract and MAFs are in place, adjust fueling using, Fuel Tab>Compensation Main. If it has aftermarket intakes, will need to work on Airflow>General>MAF Calibration. Get a nice smooth MAF transfer calibration that gets the fueling near your targets, then use the Compensation table to fine tune at various load and RPM. I just started working on tuning my 2011 Pathfinder this afternoon, running pretty darn well now and it is pretty close fueling wise now. I will start my own thread and have some suggestions for the scanner setup that I came up with and is working well. Idle/Low-load and Cruise, dialing it in off fuel trims, WOT dialing it in off the Wideband AF Sensors. First time tuning one with HPTuners, but I have tuned several of my person Nissan/Infiniti vehicles with Uprev since 2013 so the process is well known to me.