Development of the current F1 power units will be opened up in 2017 as the sport has agreed to scrap the token system.
At present, only certain parts of the power units can be developed, with each component carrying a weighting in terms of how many tokens it would cost to change it. Each manufacturer currently has a maximum of 32 development tokens to use in 2016, a number which was set to decrease over the coming seasons as more areas of the power unit would become frozen.
The system was originally designed to limit the cost of power unit development, but with the manufacturers closing in on a cost cap for customers they will be allowed more freedom as a result.
Cyril Abiteboul confirmed the end of the restrictions during Renault's launch event yesterday in Paris.
"The token system is being removed," Abiteboul is quoted as saying by Motorsport.com. "One of the reasons we have all agreed to do this is that we all need the performance of the engine to converge.
"We have decided, also for the public, to stop the public being confused between the penalty system, the token system – we have decided to simply remove the token system."