Ok, I can help here...
The two rear vents are supposed to go to the heat exchanger pipes just after the heat valves. They exist to defrost the rear window.
If they are connected to nothing, then they would be pulling air into the body from around the engine. IE: Exhaust. Bad.
The vent for the early 911/912's is actually just above the rear window on the back of the car on the outside. This is why you don't want to spray water UP on the rear window; the water will enter the vent and drip down your headliner.
Chris
68 911L
Chris
[QUOTE]Originally posted by 912s:
Tonight I plugged the 2 vent tubes in the rear shelf area. That did help some as well. Does anybody know what these are suppose to be connected to? I would assume they are for suppling fresh air?
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