My TD100 goes really well, so there is something wrong with yours. You should feel a push from about 2300rpm, most noticable in 2nd or 3rd, but still there in 4th nd 5th. In fact, if you floor it in 2nd it should take off like a scalded cat from about 2300rpm and be bloody difficult to control if you are doing anything except going in a straight line. It is a very lively car.
As the previous poster said, the turbo makes a whining noise which you can hear with the window open, but there is a thing called a wastegate that dumps excess pressure, and so if this has failed open then the turbo can spin as much as it likes, but nothing will happen. I don't know how to check for this though. Also possible are clogged/worn injectors, blocked air filter although your problem sounds more significant than this!
