Sure Mike. I installed it while I was offroading 6 days a week for work. Sometimes 30 and sometimes a couple hundred miles a day of dirt. Sometimes rockcrawling in 4 low and sometimes blasting along graded dirt roads. In silty dusty areas I could replace my air filter every couple of days if I was being anal about it so I installed the top spin. I put it at a height to help with water crossings, but primarily it was to clean the incoming air.
After I installed it I actually didn't believe that it was doing as good of a job as it appeared. I actually looked for a hole in my intake after the filter somewhere. I figured that my filter was so clean because I must have bumped something or forgotten to tighten something in the line AFTER the filter where air was getting in. It was just too clean. Month after month it was still clean. Crazy. It worked so well I was happy, but amazed.
After a couple years the filter started to get dirtier than I remembered it used to so I pulled the fender off and resealed a few new spots that developed a gap in the intake ducting. It's been back to the same great results since. Still using the original Donaldson Top Spin. Through water or dust it's been a nice practical upgrade.
(the only regret I had about the whole install was explaining to people what the hell the spinning thing was. "It can't be a snorkel because it should be above your roof" "Is that one of those Tornado fuel savers? Does it work?" Yes, it's a snorkel and no the ones at the roof line don't make it so you can go that deep anyway. Yes, it's a tornado fuel saver and I now get 55MPG around town.) So, I painted the outside of the plastic, except for a small window that faces me, black so no one can stare at it spinning. No one has asked me what it is for over a year. :sombrero: