Does your Injens have hydroshields (pretty much a black panty hose cover) on them? This will at least bounce the water somewhere else other than the filter when you leave it sitting. It really does work because my Celica's CAI sits very slow and water do get splashed onto the dryflow filter once in a while. Heck, I even tested it going through a car wash. The surround was wet, but the filter felt dry.
