reginos:
Aren't turbo engines generally more muted due to the re-direction of the gases through the turbocharger?
On top of that Porsche engines are realatively small capacity at 3.6 or 3.8 liters and also flat (horizontally opposed engines) make a very particular high pitched sound different from the sound of straight 6 or V6/8 engines.
Yes above is true, the turbo is directly in the path and muffles the sound. But the real problem as RC mentioned is that someone at Porsche can't hear, or has the wrong philosophy for what the sound should be. After-market systems like Cargraphic and Tubi have shown that the 997 Turbo's sound could be markedly better.
The sound frequency could be tuned very well also, for example while my Cargraphic would never sound like an American push-rod V8, it has a low frequency grunt to die for, and the overall sound is not high-pitched at all, more of a mid-range scream.
Nick, I've driven the 997.2 Turbo and agree with you: Sounds warmer and better than 997.1, but nothing like what I envision what a sport car *should* sound like. But as this is your wife's car, if you are thinking about changing, be careful because in my experience, 98% of women (ok 98% of the ones who have heard my car -- heard not listened, ha-ha) either don't understand, don't like, or dislike louder exhaust. The only system that I might suggest would be Tubi, as it's relatively a quiet one.
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Regards,
Can
997 Turbo + Bilstein Damptronic "Stage 2" ( Review ) + GIAC ECU Tune ( Fast as a torpedo & reversible to stock - Review ) + Cargraphic Exhaust ( Oh heavenly noise! )