I serviced my own e92 335d, changed everything that needed to, an my turbo boost pipe, which is the big red hose, had all oil on it, so I thaught it may be leaking, so I spent time an managed to take it off and clean it an check the seals an hose itself which seemed fine :/.
Anyway after doing that and the service, I put the car on and drove it then I get this loud air type of noise coming from the engine when I put my foot on the accelerator, the noise sounds like a really loud version of air escaping from a tire.
There is also a very bad power loss now an the car has no power along with this light coming on the dashboard (the one in the link which says "check")
https://www.google.co.uk/search?q=e9...-E2DiQUMRTM%3A