Originally Posted by stefan

At the Euros in Lostallo it was clear that only the Picco based engines were able to make 5 minutes without sacrifycing power.

Collari was only able to win by the slightest margin because he didn't change tires.

Neither Nova nor Sirio engines made time and had less power. I guess that's why he's running Picco.
Cordoba seems to be a power track as well, where fuel consumption will be a big, deciding factor.