Final outcome with new Fieldpiece manometer here:
New Porsche AOS reading 5.3 WC - opinions??
Well, darn. Replaced AOS with genuine Porsche .01 (latest version) AOS from Sunset and vacuum still reads high. Old AOS was not symptomatic so maybe it’s my cheapo manometer. New Fieldpiece manometer should arrive tomorrow. More to come after new meter arrives.
New AOS cold reading:
New AOS warm reading:
New and old AOS units:
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Rgds, Fred
#317 550 Spyder Anniversary Edition 2004 Boxster S, 3.8L Flat Six Innovations engine, PSS9s, etc, etc . . .
The contents of my posts are for entertainment only. As confirmed by my many motor sports fails, I am not qualified to give product endorsements or mechanical advice 
Last edited by Oldcarguy; 01-29-2018 at 10:57 AM.
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