As said above the 930 3.0 Turbo’s were a handful to drive, especially because of the Turbo lag. Indeed Turbo charging was a technology that was used in the airline business. On airplanes this made a lot of sense as they fly on high altitude (thus less Oxygen) and they fly at a constant rpm.
Both of these conditions are not met in a car. Porsche did have quite some experience with Turbo charging as they used in in their 917 Can Am and Interserie cars (1973-1975). The Porsche engineers more or less mastered the Turbo charging and its inconveniences for street use. But the early Turbo’s remained “real man drivers”.
The chassis of the 930 was also up to the task and much better than the chassis setup of the previous cars. The brakes were bigger and were direct descendants from the monstrous 917 race cars.
Apart from the fact that the 930 was set into the market as a luxurious top of the line model for Porsche it was also considered as a “Super Car”. It was probably the most down to earth and the most accessible “Super Car” there was.
Porsche also used the 930 to develop their 911 race car program. In 1976 they simultaneously offered the 934 (Group 4 race car) to their racing clients, and made the 935 (Group 5 silhouette race cars) to compete for themselves. In 1976 Porsche together with Martini as main sponsor conquered the Group 5 series.
So the 930 Turbo was the top of the line model and also the bases for a very successful 934 and 935 campaign in racing.