A4 Quattro Cabriolet V6-3.0L (BGN) (2005)
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Intake Manifold: Testing and Inspection
Intake Manifold Change-Over, Checking
Intake Manifold Change-over, Checking
Testing should only be performed if the engine is losing power.
The intake manifold change over function switches over from the long intake tract to the short intake tract at about 4200 rpm.