Bernie Ecclestone has confirmed that all twelve F1 teams have now agreed to return to pre-Silverstone diffuser rules, following a weekend of discontent at the British Grand Prix.
The FIA issued a statement late on Saturday reporting that an offer had been made to scrap plans to ban blown diffusers - due to have been introduced from the British round - and allow teams to continue with the technology until the end of the season, when new exhaust rules will come into play for 2012.
Pre-race speculation suggested at least two teams – reported to be Ferrari and Sauber - were holding out on the agreement, with championship leaders Red Bull the loudest voice against the proposed changes.
However, following further emergency discussions within the paddock, both Ferrari and Sauber have now joined the remaining ten teams in agreeing to revert back to the regulations seen in Valencia for the European Grand Prix.
What that effectively means is that off-throttle blown diffusers will be made legal from the German Grand Prix onwards despite Charlie Whiting's previous remarks that the device was illegal, although the ban on engine mapping being changed between qualifying and the race will remain in place.
With the twelve teams having reached agreement, all that remains if for the FIA to make the decision official and confirm the legality of the device.
However, while the off-throttle diffusers will remain in place for the remainder of 2011, blown diffusers will be banned at the end of the campaign.