Audi Repair Questions? Ask a Mechanic for Answers ASAP
Check your hoses from the turbo- I have seen the clip that holds the rubber hose to the hard fittings will wear and round off, and allow the hose to come loose. Look for any sign of oil leakage, as there is a lot of oil that gets into the intake tract, and it works as a good indicator of intake boost leaks.
Turbo is on the passenger side of the engine block, bolted below the exhaust manifold. The intake should go in from the front of the turbo, and then outward under pressure from the bottom side of the turbo. The hose then goes down, along the front under the radiator area, and comes back up on the other side to go into the intake manifold.
well, you may have to remove your belly pan to access underneath. Have you had the system scanned for faults?
I would check it just to see if it stored anything.
I'd still try to take a look at all the intake hoses, and also listen for any leaks in vacuum hoses with the engine running.