Thanks Adam, cant wait for the better weather so I can spend some time cleaning it!
I've been thinking about changing my mine, think I might be loosing boost as well but wont know until I have a look I guess!
I'm thinking of going for the revision G but just haven't got round to it, where did you go for yours?
As far as I know on K03 cars, the DV is located at the turbo. From watching videos/reading threads its done from under the car, three hex bolts and unplug the sensor/cable and then switch for the new unit.
Here's the link to the video I watched, gave me a better idea of the DV location etc