Does anyone have any modifications done to their sprinter; water meth, chip, modual, intake, deletes? I use my sprinter for work. I have at any one time 30 sheets of 1/2 inch ply wood, 30 2x4's, tons of tools and a couple of generators. I would like to prolong engine life and improve gas milage. I currently get 15mpg. Any info or experiences would be great.