I've gone ahead and translated the news item on the Madeno Racing website:
The 1.4 16V 100HP engine is equipped with a hybrid engine management system which can only be optimized through serial communication. For this sports version of the Fiat Panda, the Madeno Racing software engineers were able to develop whole new engine management and communication software. Not only optimizing the ignition and fuel mappings, the "Sport" mode is also reconfigured and the rev. limiter is raised with 200rpm to 7200rpm. Also, the driveability of the 1.4 16V power source is increased, as after the optimization at 2400rpm there's a 12Nm increase in torque.
That's all the information available on the Madeno website.