However, the first true application of a turbocharger came about in 1972, when Porsche fitted their 917 Can-Am-series race ... 1977 in the form of the charge-air cooler. The new turbocharger ...

That intake noise is intoxicating. The Porsche 917 is one of the most desirable, valuable race cars of all time. Despite that, many owners aren't shy about taking theirs to the track. This one ...