One problem related to manifold/header/muffler/tail pipe has been reported for the 2005 BMW 7 Series. The most recently reported issues are listed below.
Tl- the contact owns a 2005 BMW 7 Series. The contact stated that he was unable to pass emissions because the check engine warning light was illuminated. The contact took the vehicle to the dealer and was told that the intake valves on the auxiliary pump leaked oil into the manifold and caused the vehicle to release smoke and emissions. The failure mileage was 99,500 and the current mileage was 101,100. Kmj.