I'm getting the poor mileage in my focus due to the tune and not so much driving habits. maybe the off-road goodies will help me in the snow. like I said I would like to do the occasional off-road/camping trips with the family.
Its not due to the tune unless you have a terrible tuner. Turbo vehicles are usually a tad richer from the factory under open loop. The power usually comes from leaning it out a tad. Pretty much all tuners will be leaning out fuel maps a decent bit in open loop mode
Closed loop operation is stoich regardless of tune unless a tuner shuts off the o2 feedback for some reason to bypass typical closed loop correction, (not common on vehicles in the last 20 yrs or so), so there will be NO gas mileage change in closed loop (ie: normal part throttle driving) as the o2's compensate a small percentage to keep the car stoich for gas mileage and drivability
You are getting worse gas mileage likely because of your right foot. I own several turbo and blown vehicles, I know its not easy to stay out of it. I drove my GT500 across country and got like 18mpg in the cold because I didnt hit boost at all. Since I have had the car home, I can say I have never seen over 11mpg with the car. lol.
For offroad goodies, it may be a hit or miss with snow as well. I think the tires from the factory are not soo aggressive that they will work well, but talking to people with extreme offroad tires, typically they say traction is significantly worse in the snow as usually they are more designed for mud and dirt type surfaces. Knobbier tires are louder too.
Not trying to detract you from what you want, but being a person I like to always look at all the angles before spending big money, I just wanted to remind that offroad packages can be a little bit of a bear to deal with if you do not plan to utilize those functions.
Going from a hot hatch to a truck all in itself will be a major life adjustment, let alone to an offroad package truck.
