This is my first mods on my g35s 07 6spd. I like the moment when I first turn on the engine, loud enough noise to alert everyone surround. Then, it gets more mellow. Revving gets loud under 5k rpm, overrev won't give any exhaust noise. My experience when driving is enjoyable because I can still talk and hear the exhaust. It is pretty loud around 3-4k rpm, that is really open up the exhaust noise. After that, it starts to gets quiet, but more notice than stock exhaust. Good experience!