Removed the AFE cold air intake that the previous owner has installed and replaced it with the factory air intake box/filter arrangement. This was on my '06 Silverado with the Duramax diesel. I don't particularly care for oiled gauze type filters and the ambiguity associated with them ( too much oil, not enough oil, when to clean, etc, etc, etc).
It's something I've wanted to do for several years and finally got around to doing.
