I drive a 4.8is. Sometimes I guess since Im inside the vehicle I wish it were louder, but whenever Im outside the car and I hear someone else drive it or simply turn the engine on, I put a huge smile on my face. I wonder how it sounds full throttle from a 2nd persons POV. Ofcourse that will never happen as the most I have let anyone drive my car has been with revs under 3000rpms, and it still sounds badass.