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Old 03-23-2013, 06:52 PM
ard ard is offline
Resident Curmudgeon
Location: Sierra foothills, California USA
Join Date: Jul 2009
Posts: 13,865
Mein Auto: '12 X5 35d/E39M5/996TTX50
FYI- the one inside the cabin filters recirculated air, the other two fiilter incomng air.
Keep it as simple as possible...but no simpler.
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