Ferrari's full blown diffuser yet to come - report

Ferrari will only get its real blown rear diffuser up and running at a forthcoming Grand Prix.

It was believed that the Italian team began running the Red Bull-style low exhaust layout at Valencia.

But Germany's Auto Motor und Sport reveals that, in fact, the European GP was only the first phase in a multiple-step development for the F10 car.

The first step was a new gearbox, debuted only by Felipe Massa because Fernando Alonso was in the middle of the four-race mandatory period for his existing transmission.

The Spaniard will get the new gearbox at Silverstone, as well as a new rear suspension layout.

The real benefit of the new gearbox/suspension layout, however, is yet to come.

It is reported that the new layout allows a steeper shape of the diffuser, but the downforce advantage will only come when the exhaust fumes are directed through the diffuser.

Currently, Ferrari is working on ensuring that the blown exhaust does not actually compromise grip due to a sporadic airflow.

It is only at a later date that the entire concept will be up and running.

At Silverstone, the F10 will feature the new gearbox and new housing for the suspension. Ferrari is introducing the update in stages, so that when the final concept is ready, the team does not have to wait for Alonso and Massa to reach the end of their four-race gearbox phases to debut it.

"In Valencia, we introduced significant updates on the F10 and there will be more in Silverstone and the races after that," Alonso confirmed.