Well, i will post my results too in here
I started to use "Pulse and glide" driving style, after i installed the MPGuino.
I saw in real time how every driving style affects the economy, and realised that what driving school suggests for best economy, engine braking, is wrong.
Gliding in neutral saves most gas, and you have to use the brakes, that will also prevent the brake dragging in future.
And while running free with top gear, very little above 60km/h, uses no gas at all. That's useful sometimes.
Previously i have got highway consumption about 6,2l/100km, with normal driving.
With P&G, it's about 4,5l/100km, with accelerating and gliding between 80km/h and 100km/h.
Measured in about 20km trip, few times.
Next i'm going to make an EOC switch. I think it is done by cutting the hall-sensor signal, whick acts as kind of camshaft sensor at the same time. My Golf does'nt have cam sensor
And i should really calibrate the MPGuino better, since all i can do is calculate percents now.
Every time i have tried to calibrate it, either my girlfriend drives my car and starts it so weirdly that the trip meter resets, or the car gets broken. I swear someone will press the reset button or something happens next time and the calibration will go somewhere in the future...