As Porsche was interested in winning Can-Am Championship, they needed more power to their cars. Always thinking big, Piëch started development of the 16-cylinder engine. The experimental turbocharged 12-cylinder was also created. When they understood that it was easier to get the power out from the turbocharged 12-cylinder than from the 16-cylinder, the 16-cylinder version of the 917PA Spyder remained a one-off prototype. The 917/10K Turbo became the first turbocharged Porsche.