Funny you say that Tim... In fact if you do drive the CEED with a heavy right foot, its supposed to be better to choose one of the better performance maps as the engine becomes more efficient at greater torques and thus overall uses less fuel for that driving style.
I have switch on this map box where I can switch between 3 different maps from the drivers position
In fact one of the piggyback manufacturers claims to increase torque of the CEED 1.6CRDi to 150 bhp.
I shall never know as I dont intend to pay for as rolling road session...lol