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Could anyone tell me if the EGR valve is Norm-open or Norm-closed? As my EGR is passing in some way. Also dose the solenoid that controls it apply a vacuum to open or close it when the boost is at its max.

Audi 1.9 TDI A6 UK 1998 C5 [img]/ubbthreads/images/graemlins/****_you.gif[/img]