Sauber C29 – Debut of the rear wing stalling system at Spain

          Finally Sauber made it to race its own F-duct version to gain extra speed at long Catalunya  finish –start straight . The F-duct system though was significantly updated since the previous tested only versions . It now receives air from a duct placed in front of the cockpit rather than the sidepods , which is similar to the one featured by Mc Laren MP4/25 .