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      11-02-2012, 03:56 AM   #23
Dackelone
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Quote:
Originally Posted by vito747 View Post
HVAC?
HVAC = Heating, Ventilation, and Air Conditioning


I was talking about the air coming out of the center vents. When you go WOT for as long as we can over here on the Autobahns... after a long time, the vacuum stored in the vacuum res will be depleted and the air output will default to the windshield vents (ie defrost mode).