For once in my life I don't feel I need it yet.. the car is still new enough to me
I think the problem is that the m35i also runs high boost to start off with, so don't actually know how much more is left on the table. Certainly they could change some fuel curves and timing which would make some gains. Hopefully with the new mini getting the engine too there will be someone using their setup as a guinea pig. I still haven't gotten around to even dyno'ing my car.