A&Q about 350Z
Q:
They all sound about the same. I had a FX35 drive by me in a parking lot a few days ago and was very surprised that is sounded just like a Z.
Get an S-Tune exhaust and it will sound better. Same basic sound just louder and a bit edger.
A:
Who makes the S tuned exhaust?
A:
Minus the tire shigidy and horrible gas mileage I love this car it's one of those rare cars that you can buy and never have to do any mods too. I tinted the windows and am looking at rims but other than that it's it.
A:
My mileage has been great, but I mostly highway drive and don't push it too hard. Upper 20's with a lot of 6th gear.
A:
S-Tune is NISMO's exhaust. About $850 if you look around. Install is DIY if you are even semi-capable. Fit is perfect and quality is top notch.
A:
The Z and the G should sound very similar. They have the same engine although the G is slightly detuned and the G probably has a slightly longer exhaust pipe, as it has a longer wheel base, so if anything the z is probably slightly louder.
As far as gas mileage I drive my car until it's empty and then refill, as far sa mpg I haven't a clue.