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3

I found the issue. A small vacuum hose that goes from the vacuum pump to the turbine (waste gate, I assume) was disconnected during the emissions test and just left hanging. It's in a difficult-to-see spot underneath a bracket located between the engine and the battery. The hose is dirty and grimy, while the end of it was shiny and clean. It fits snugly and ...


1

Bosch is almost certainly the manufacturer of the Audi part. Car companies do not make all their own components, they sub-contract some parts out to other companies or buy existing models of parts from manufacturers. When selling replacements the OEM (Original Equipment Manufacturer: i.e. the company that made the part in the first place) often sells their ...


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