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[T3] Aux air regulator?


Hello All........riddle me this.........
What does the aux air regulator do for the crankcase vent system?...best I 
can tell, it's a pcv valve?.....it allows crankcase air (and fumes) to get 
sucked into the air intake distributor for burning, and it also allows 
clean air to be drawn in (from air cleaner via a braided hose) to replace 
the air drawn out, correct??
If that is true, then what is the function of the black crankcase vent box 
located next to the blower housing, which also has a braided hose?
Thanx,
Dave Pallo
Hers: '72 Square (in process)
His: '96 Impala SS....Sunny Sunday's only

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