I purchased HP Tuner shortly after starting my build. So far I have used it to check systems, change my radiator fan on/off temps, shut off VATS/Column and a few other minor thing.

I'd like to start gathering some of the experienced user's tips and tricks for tuning. I get DTC P0171 and P0174. From what I've gathered I need to adjust the fuel trims. What is the best new user friendly way to make adjustments?

All other HP Tuner tips are welcome also.