I use torque. It's pretty good and quite customisable. Whilst it's static and not on I've configured mine as so for now
(mpg is made up of a hard drive and then 2 weeks of town driving/stop start - far better than my old eco box and is pretty accurate according to a calculation at the pump)
I also use Torque Pro. Out of curiosity, how did you set the car profile? Did you use the official car specs or did you include 2 persons and full tank of petrol in the weight? So 1160 - 1170 kg?
Anyone Been able to wire up a permanent power source to their twingo I'm thinking about fixing an iPhone or android phone where the RS monitor usually is could run it through the cigarette lighter when I need to charge it though