Yeah I didn't expect these results myself when I first started out with the test. It involved me completely changing my driving style, because the turbo really puts a smile on your face when you push it.
With the steps I mentioned, I'm sure everyone will see a significant increase in their fuel economy, however you really need to control yourself and change your habits.
I was trying to see if I could take it up to 17km/l, but now my patience has run out. I've been pushing her since, and now I'm back to about 13.
Again, this was the true result of my experiment. You're welcome to try it yourself. I myself was amazed.