Came across this thread while trying to find information about the MAF location so I could take it and clean it. Based on my having black spot in the tips, even little speckles on the back and now a CEL that I cant seem to delete, it looks like this might be my real issue. Problem is I just bought out two weeks ago with 64k on it from a Jeep dealership, I'm at 65k and I didn't any kind of warranty. One person mentioned they got a courtesy replacement at 70k but they didn't list what model year their X5M was.
http://www.xbimmers.com/forums/showt...4#post18575734
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'10 BMW X5///M - Alpine White on Sakhir Orange - JB4 w/ HCP Stage 2 BEF, NGK 97506 @ .20, SS tubing & BMC filters, gutted cats, AC Forged 312 22's, H&R 2"
'98 BMW 740iL - ///E39 M5 6spd swap, fully built engine (sleeved, P&P, cams), 3.46 LSD, H&R Stage 2/Bilstein HD, Magnaflow 14816's
'97 BMW 328ci - ///E36 M3 clutch & L/W flywheel, Z4///M 18's