On the later ECUs, I can tune out the side effects of fuel cut to the point that you will never find it from the seat. It is possible to find on the data logs.
As far as I know, the autotune has always worked. You just have to set it up correctly.
I have a base map you can use to set up MAP based tuning. The last one I helped a guy set up took about 20 min on the phone. I just do a join.me session and watch over your shoulder as you set up the things that do not come over in the base tune. Hopefully some day the guys that have done this will get together and do a step by step with screen shots.
Beast