Turbo pressure sensor...where is it?

[googlethorpe]

Hi Guys

Can anybody tell me where the turbo pressure sensor is located on a '92 2.4TD and has anybody any experience of fitting a new one? Any pictures showing where it is would be a great help.
Also i have tried to get a new one from a main dealer and the part numbers dont match (why am i not surprised!) and he couldn't even give me a price for one that he does have listed that only fits an '89 - '90 model.
Does anybody know of a source where i can get hold of one ?
Any help greatly appreciated

[medion-1]

turbo senor

the turbo sensor is located just behind the air filter its a small
box about 1cm long by half cm wide with some wires and a
pipe connected to it it is also marked turbo pressure sensor
denso