The latest in a string of reports on Le Mans Series rule changes could stand to really shake things up in the prototype classes in a few years. ACO, the French racing organizers which coordinate the European Le Mans Series and its headline event, are reportedly planning on banning V10s and V12s from the top-tier LMP1 class by 2011.

In their place, LMP1 would adopt the rules currently in place for LMP2, which means 3.4-liter V8s and 2.0-liter turbos. LMP2, meanwhile, would switch exclusively to production-based engines. Both Audi and Peugeot, who have dominated the series with their 12-cylinder turbodiesels, are reportedly in favor of the change in formula despite the need to send their engine development programs back to the drawing board.

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Porsche has already introduced direct injection on the Cayenne and 911 Carrera, and the Turbo, GT2 and GT3 all stand to benefit from the technology next year. While it's normal for most automakers to take the lessons learned from motorsports and apply them to their road cars, Porsche is doing it the other way around.