gas mileage
 

What are the best things to do to maximize gas mileage on the xb?

Brand new fuel system and brand new ignition system with a lean tune on a perfect tank of gas.

Mythbusters did a show about how by doing several different gas saving techniques you could DOUBLE your gas mileage. I don't remember them all but 1. avoid braking and rapid acceleration 2. Windows up/AC off 3. Legally draft when possible 4. turn off engine at red lights 5. navigate in a way to go through green lights 6. remove excess weight 7. stay relaxed/go very easy on gas pedal 8. Never drive over 45MPH.

Mythbusters used two different cars and although they didn't double their gas mileage one car was 70% better and the other 40% better. Of course, several of these aren't very practical so I think if you just take it easy on the pedal and adapt a couple of other "hypermilling" techniques you can prob raise your gas mileage at least 20%.

This is exactly true, however I've never seen the show, but I proved this myself in my own right. Our company drives all four cyclinder Ford Rangers. All of our guys get about 15 mpg. I have to travel from Janesville, WI to St. Louis, MO all the time. 330 miles. I used to have to fill up in central Illinois because I would drive normal and pass people and go about 70mph = 2900rpm at about 23 gallons of gas for the whole trip total. I was tired of having to fill up after almost making it everytime. So I said f.ck it and I dropped my rpms down to 2500 and went 64 mph and didn't go above them the entire drive home. I stayed away from letting the truck downshift for hills or wind or passing the entire time. Not one downshift. Not only did I not have to fill up, but it only took 11 gallons of gas which put the gas tank needle dead nuts at half way. I couldn't believe it. You do the math on that gas mileage, it's insane. I've just blown everyone's mind that works for us and that it is possible. So yeah, and the trip actually takes me just as long because I don't have to stop, so going slower just evens out. So the last 30 times I've made the drive, it's just a straight shot.

The biggest possible MPG gainer for our xB is Cruise Control at 58MPH on freeways.

You will guaranteed get 40+MPG tanks.