Installed the new wind deflector, and have already noticed that I don't need to run rear wiper as much, washed ( pressure) first time I have washed it at all since we purchased from the daughter and boy did it need it, there was real thick moss growing along the window seams, WELL I think it made run smoother, cleaner air I guess, but it was quieter. Also vacuumed the back out. The theme here....now that the pathfinder is up and running, efforts have been changed to getting it cleaned up and looking better, and smelling like a truck, not old rubbish..LOL, it's all fun though...