Hey, everyone. I am still a bit new to the software and tuning in general, although I have quite a bit of knowledge on the mechanical side of things. I purchased my hptuners mostly just for data logging and remote tuning from my tuner down in Columbus so he can assist with troubleshooting on my Camaro. Anyway, a friend of mine has a 1999 Coachman RV based on the E-350 chassis with a 6.8L V10 and was telling me about his low fuel mileage (6-8 MPG). Would I be able to make any significant gain to his MPGs by adjusting his fuel tables? If so, does anyone have any tips or experience with tuning these engines?

Thanks.