I've had my AFE on since I got the truck but, I also had a pre filter on the AFE oiled filter. Never had any water get into the filter, seen the pre filter with some wet spots but never soaked. Didn't have one with the powercore, dont know why I did'nt think of it. Feel very stupid about this and its gonna cost me.
Gonna order a lid for the CAI and go back to my AFE filter I had on there before. Don't know if I'll go back to the powercore again. I only drive on the roads and highway, never taken it off road, never hunt puddles. Besides not having a pre filter on it I can only guess the water started to build up over time and the filter doesn't dry as fast as normal filters. So even with a pre filter and lid I could run into the same problem with it again.