quick reply for the moment, awaiting email with the graphs in...
First the good news!
Standard my car was pushing out 149 of our British Horse's worth of power
I then ran through the supplied maps, and did get some increases - although not quite as much as hoped.
Phoned dieseltuning, and after some to-ing and fro-ing, we discovered that 3 of the maps had been mis-set, using a maximum of 3500 revs - which didn't help matters.
It looks like it's going in the right direction, and I'm confident that there is more to come, but at the moment I'm not seeing fantastic results, just fairly good ones.
Will post up exact figures and dyno graphs when they arrive - should be later this afternoon.
In the mean time, the box is going back to have some more maps loaded, ready to try again.
From what my guy told me (and he makes part of his living by running the rolling road at his tuning centre), these boxes do indeed play with the fuelling - pressure and timing.
Nowt to do with the turbo tho.