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I would bet that Porsche designers and engineers worked on the drain back issue for a while. Since it cost twice as much for two nozzles, there must be a valid reason of the bean counters in at the time would have said use just one.
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Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
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