Introducing the Sound Booster Pro by Autofidelity.
With Sound Booster Pro, you can give your environmentally friendly, low consumption Bi-turbo diesel car the performance sound it deserves, and select the sound you want whenever you feel the urge. You can have anything from a lazy sounding V8, a supercharged V6, or something closer to that monstrous sounding V12. Either way, Sound Booster Pro is what your car really deserves to sound like, an authentic gas guzzling aggressive sports machine. And, for those times when you need to make a silent entry or exit, your car can go back to silence with the touch of a button. No modifications necessary.