I have my 147 1.6TS mapped by Jano (AD.uk) 100kkms ago. What I can say is that it improved my fuel consumption by, at least 0.5l/100kms, depending on the situations. I can have improvements of 0,8 and more, believe me. Thanks to a away better low torque, better drivability, faster throttle response.
Of course that, if I push it hard... I wont even look at the consumption.
