It most likely is coming through there. I remember when I took off the rubber grommet on the back of my old E46 M3 to put angel eyes in, that when it popped off, I would get condensation. I would cover it back up and it fixed the problem..
That hole that was drilled is probably where the difference in temperature allows condensation to come in. Use Jb quik to seal up.
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E92 M3 AW/BK
RPI GT-M - ESS TUNE
Last edited by Bmw M3 Guy; 11-25-2011 at 04:32 PM..
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