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The AOS is the pvc valve, there is a membrane inside that controls the flow with manifold vacuum.
A vacuum leak usually trigger P1128 and P1130 on a boxster.
Here the is a problem with idle control.
Do you have a 2.5L?
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Porsche Tech in France.
www.benautodesign.fr
Ben-Auto-Design : Performance parts for 9X6 / 9X7
1982 928 S Euro
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