Ok, so it's Sunday and it's almost exactly 60 days since I took home my M3. At the dealership, when I picked it up, I installed the metal grate, air intake filter that is located in the frunk.
I have washed and liquid waxed my car, religiously, every weekend, but this was the first time I checked on the filter. If I didn't have this on there, all that would have gotten down into that intake area.
Gotta say... Glad I had this, and glad I checked on it now, before it got worse. P.S. I live in a place that gets almost no rain in a year, so the only time this car sees water, is when I wash it. Gonna start cleaning this every 2 weeks now.