always flash your base map as what your car is.
flash to stage 2 if you have a tbe.
you can try doing the real time fuel econ mode if you want. My car is totally a daily driver and I have the stage 2 base map on all the time and never use fuel econ at all and get 21-24 mpg in mixed driving, haven't had a freeway trip to see hwy yet.
I actually get better milage with stage 2 then i did with a totally stock car
*edit* I'm sure you'd figure this out but there is only base maps for things like stock, stage 1 91/93, stage 2 91/93.....each of these also has a real time map version that contains less parameters than the full base map. So you flash the base map to what your car is and what fuel type (base contains appropriate cel blocks, boost control, etc), then use the real time for things like valet, anti-theft, fuel econ, etc.