A piece of TDI (and automotive) history could be yours if you have the (Bit- )coin.
When the R15's predecessor, the R10 (see profile photo), was still in its first season, I attended a few ALMS races. I did get to ask one of the Audi North America mechanics what he thought the engine could make if they removed the mandated air restrictors. If you're not familiar with sports car racing, there are a multitude of radically different engine designs that can compete against one another in the same class. In order to reach some sort of parity and make sure power doesn't run out of control and vehicles reach absurd/unsafe speeds, they have different size air restrictors for each different engine out there and occasionally make competition adjustments.It would be a downgrade.