Hi,
A remap on the 1.4 hdi has to be done on the bench, so ECU out and a new remapped chip fitted. But these get very good gains 45bhp/45nm torque.
The C2 GT gains 10bhp/17nm torque, also good gains for a light car...:)
We can do remap the 1.4 HDI via obd no prob...same with the C2 GT!!