Ferrari forced to make a major redesign of their car
Ferrari have been forced to make a major redesign of their car as a result of flaws discovered since it ran in pre-season testing in February.
Team boss Mattia Binotto said work on understanding why the car was off the pace led to a "significant change of direction in terms of development".
The result is the car will run in pre-season specification at this weekend's delayed season-opening race in Austria.
The upgrade is due to make its debut at the Hungarian Grand Prix on 17-19 July.
Binotto said the team had been forced to revise their approach to the car's aerodynamics following their investigation into its performance shortfall.
"We had to understand why we did not see the results we had expected on track and how much to recalibrate the whole programme as a result," Binotto said.
"It would have been counterproductive to continue in the direction we had planned, knowing that we would not have reached our goals.
"Therefore we decided to come up with a new programme that looked at the whole car, knowing that not all of it would be ready for the first race.
"Our aim is to introduce the updates at the third race at the Hungaroring.