Hi,

I have a vectra 2.0TDI (100hp). Last week, I had to replace the rubber hose 
that is between the output of the turbo and the engine.
It was thorn. It cost me 150 euro. Now, I have the impression that my turbo 
does not work, I feel less power.
Another problem (maybe related) is a terrible noise coming from under the 
car, it's a vibrating noise, no knocking noise. It sounds like a metal plate 
vibrating. I've already tried to localize it, but had no succes. The car has 
this problem for already 2 years or more, but it is getting worse.
Could it have something to do with the exhaust pipe / catalysator?

Thanks