No, at this time the turbocharger is not nearly as popular as it is today, for example, also not in a diesel engine. Apart from Porsche with a very expensive model, therefore produced in small series, all car producers kept distance to the turbocharger. Only GM with the Corvair and BMW took the risk. The latter unfortunately at the time of the oil-price crisis.

But exactly the difference to the classic, charging in a different way made Saabs engines a successful trendsetter. It's engineers are not lookng to the last bit of performance, but rather to more torque below. 'Only' 23 percent more performance at the same rated speed, but 40 percent more torque at 700 rpm less speed for the new engine.

That is a different interpretation than previously used. Had been achieved by opening the wastegate, if there is too much exhaust gas pressure between the engine and supercharger. Normally a wastegate is controlled by the boost pressure. So there is no appreciable increase in boost pressure at full load. So the overall level can be higher.

The dashboard has not changed very much except the display for the boost pressure (maximum 0.7 bar). The old new engine was despite the martial spoilers by no means an rioters, as one might perhaps expect from the performance. The low noise level especially at lower speeds was assisted by excellent performance. The engineers have successfully found a way for more performance, less polution without increasing weight too much. 01/16