Ferrari is to close and recalibrate an ageing Formula One wind tunnel after blaming it for a series of failed updates this season.
Team principal Stefano Domenicali said some of the aerodynamic developments produced to keep championship leader Fernando Alonso's car competitive worked in the tunnel, but not on the track.
At the Japanese Grand Prix on Friday, he said that the team would decide in the next few weeks how to proceed and how long it would take to revamp the tunnel.
Domenicali said it was "not obsolete, but not really up to the speed of the new technologies that are available on the market".
Ferrari has been using Toyota's wind tunnel in Cologne as well as one at the Maranello factory in Italy.
Ferrari made a slow start to the season with its car some 1.5 seconds behind its rivals in qualifying.
The team also struggled in the first part of last season after track performance of the vehicles failed to match data emerging from the wind tunnel.