Thread: Vacuum engine to improve fuel efficiency? (after burner engine)
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Old 05-01-2020, 09:34 PM   #12 (permalink)
cRiPpLe_rOoStEr
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Quote:
Originally Posted by iikhod View Post
And some older saabs used vacuum to move heater/blower air flaps.
Makes me wonder how some vacuum-driven flaps behind the grille could be useful to improve aerodynamics and cut warmup times...
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