I haven't really stuck to the original plan at all, but I did fit the turbo a few weekends ago and all went to plan. See my build thread here
http://www.audi-sport.net/xf/threads/northampton-ofns-project-thread.255626/page-4#post-2996544
As for results, i'm still on the standard map with original 270c injectors for now. I'd acquired some BFV injectors and booked a remap for next week but i've cancelled due to a whole load of clutch slip. I took it easy for the first 500 miles but I've started giving the turbo something to think about recently. Initially the engine management was quite restrictive but it seems to be getting quicker. I know there's an element of adaptability in our cars maps but could it really be adding fuel to compensate? Anyway, it feels quicker.
I guess the next few steps are clutch, 3" stainless downpipe (damaged flex during turbo fitting and now it's spittting) and then live remap with printout
Any questions, fire away.