Just so you know any piggy back device on the K11 ecu behaves rather oddly due to the RPM enrichement curve of the stock ecu.
What this means is you will never get a good fuel reading at all load points. It can mean 1st gear acceleration is massivly rich if 5th gear is set right, or the opposite is true if done the other way. Neither are particulary that nice, or will give the kind of results I would want people to have, so I don't recommend safc or even e-manage for the K11's any more.