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Date: Thu, 01 Apr 1999 16:32:25 -0500
From: "Eric R. Sterbenz" <>
Subject: How's the APC work?

Folks, Does anyone know (at a high level) how the APC controls boost pressure on a '97 Aero. Is it just through the wastegate or something else? Does it hold the wastgate closed to gain pressue or open it to releive prssure? I noticed that there are what appear to be three vacuum lines running off the APC control valve to the turbo area. Thanks, -- E.R. Sterbenz

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