Having been a part in designing racing baja karts for a few years, there are some areas where weight savings is helpful and where it really isnt. Reducing the length of a couple of bolts by .25 inches may shave weight but in the end, that big mac you ate or that extra .5 inch of hair on your head is just gonna negate that anyways. In your case, chopping things out of your expy really isnt going to do you much good and just cause frustration when that one day comes when you will need that part you removed. If you want great mpg, the expedition certainly isnt even a vehicle you should own but improving the efficiency of your truck is always an option. Bad mpg is just the nature of the beast when it comes to expeditions. Instead of removing your light bar, wax your truck to reduce the coef. of drag over the surface area of your vehicle. This will give you way more gain then removing parts. Making sure ur tires are at the correct pressure will reduce the energy loss and heat production from the tires because they are flexing less. A high performance filter or intake will give you 2 to 3 mpg more. A better exhaust will also boost your mpg and power. I def agree your driving habits area huge influence on mpg over a long period of time. These were just a few ideas on how to boost some mpg. The minor things magazines tell you that boost mpg are a load of garbage and only work in a controlled environment. Stay smart and make changes that matter.
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