Why isn’t Saab tuning his engines the same as Hirsch-P?

A happy new one. This is a question to the, screwdrivers among you or to those who know each other. I noticed in connection with the new Saab V6 Turbo in some threads that the tuning of the engine should not have been very successful (I still find it successful even if the turbotypical boom is missing a little bit), and that with Hirsch-Tuning everything should then be completely different, also the consumption should improve – was to be heard with some. But now to my r Question: Why doesn’t Saab just do this vote himself. I mean, they developed the engine and should know how to tick. Besides, they also have more resouces for R&D than deer – and don’t get it as well as the Swiss? Something’s not right – are the Swedes now so bad or the Swiss so good? So why is the basic setting in the new 9-3 Aero kept your view so “brav”? I’m already very excited about your Answers. Greetings Somic