Red Bull Racing will be required to run revised engine maps during the upcoming Hungarian Grand Prix weekend following clarification of the relevant regulations by the FIA.
Controversy over Red Bull's existing maps broke out over the German Grand Prix weekend, where the team's system of reducing torque in the middle of the rev range was deemed legal by the FIA stewards following a recommendation to review the practice from the FIA technical delegate.
According to British publication Autosport, a revision of Article 5.5.3 of the regulations has been made by the FIA and communicated to teams, clarifying its original intention of ensuring a linear relationship between throttle position and engine torque demand.
It is understood that teams will now each have to nominate an FIA-approved ‘reference' engine map, from which only minor variations can be implemented over the remainder of the season.
Red Bull drivers Sebastian Vettel and Mark Webber finished just fifth and eighth respectively in Hockenheim, with the local driver loses three positions thanks to a post-race penalty.
See below for Speedcafe.com's Hungarian Grand Prix Race Guide