Red Bull Racing will indeed be forced to alter the engine mapping of its Renault power units from this weekend's Hungarian Grand Prix after the FIA moved to close a loophole in the regulations.
Although Red Bull's cars were deemed legal by the race stewards in Germany last weekend, they are believed to have been operating with engine maps that had reduced torque in the mid RPM range. The intention of the regulation prior to its clarification was to ensure that there was a linear relationship between the throttle position and the torque demand on the engine.
As expected, the FIA has issued a clarification of Article 5.5.3 within F1's technical regulations to the teams ahead of this weekend's race. Although no official statement has been made public, the new version of the regulation insists teams will be limited in the amount of adjustments it can make to the engine torque map race by race.
According to the clarification, teams will be required to nominate one engine map, as a reference, that they used during the first four events of this season, which must then be approved by the governing body. Once passed by the FIA, the engine torque curves above 6,000rpm must not vary by more than plus or minus two per cent from that reference map. Teams will be allowed to make specific requests for changes when races take place in "exceptional atmospheric conditions," however.