I haven't been out too much either...busy with work...
Each time I go out, I'll tweak a setting or two and see what it changes...I know with modes 5 and 6 on 2.0 and mode 2 on 3.0 and mode 3 on 4.0, I got 31.9 mpg...however, I did get some backfiring/popping...maybe mode 4 on 6 is too much? Performance was outa hand...huge change...love the JB..
I'll keep track and let you know...
Going to try to ryde today after work. I really don't know about the gas mileage yet. Before the JB the best I ever had was 34 MPG then around 31 MPG the last 4 tanks were 29.8 MPG. I might just top off my tank today and see if I can get a couple of hours in and then check it out.