This video starts out with a full throttle run from about 70 to 142 in 3rd, 4th and 5th gears. The mic is mounted on the rear license plate. My car is stock except for a Magnaflow x-pipe and Green filters.
http://videos.streetfire.net/video/T...un4_148795.htm If you look at some of my other videos at Streetfire, you can hear what low speeds sound like. This link is a lower speed event at GSS. You can hear what the car sounds like at part throttle below 100 and at idle.
http://videos.streetfire.net/video/G...K55_157528.htm
I also have a G55 and can tell you the blown 55's sound much different from the naturally aspirated ones. Both sound great.
The Magnaflow stainless X-pipe cost me $200 to get installed.