Thanks all
I will investigate further.. the workshop manual wiring diagram for the fuel injection system is, I think, different for the K7 model...
I can put up with the warning light for a while and so I carried on with the installation.
So far I have installed the PCV, a 12V dc switch to run two maps and disconnected the O2 sensor.
After loading maps 503 and 504 (European maps for aftermarket exhaust and K&N filter) I tested the bike..
The results are impressive... the machine runs much better at low revs and speed; I can now ride in 3rd at 30mph! Hunting and stumbling are gone and no more backfires through the carburettor(in baffles out mode). This will make commuting in traffic much easier.
Obviously its early days, as I get more used to the system I can tweak the maps accordingly, I also know that someone is mapping a Delkevic exhaust system on a DL1000 in the US so better maps may be available, or I may just save up and get it mapped at a dynojet place as recommended by a friend and people on this thread.
But for now it seems to work well... I will report back as I use the bike more and can check on mpg and long term performance..