I just bought a slightly used G37 Sedan but while the dealer was prepping my car they let me drive a coupe. The main thing I noticed was the coup had a little more growl to it. I'm not sure if that is because of my location related to the exhaust or there is actually a difference in the exhaust systems all together.

Anyway, what would be the recommended way to get a little more of that coup sound out of my exhaust w/out replacing everything and would this do anything to my warranty if I replaced something? Thanks...

 

I would recommend an axle-back like Tanabe or Invidia. It easy to replace and can give you the sound you want. There will be no warranty issues for parts that aren't touched.

 

Tanabe will replace just the mufflers, Invidiais a full catback. Invidia took me 2-3 hours to install, only needed ramps to get the front end up. Tanabe should take 15 mins or so, no ramps needed, just a socket wrench to loosen a few bolts.

 

I think it's hard to replicate the coupe sound from what I've read.

 

^ this. you can't get the exact coupe sound without trunk modifications. the rear section of the coupe exhaust is a totally different shape. aftermarket parts will get you closer to the sound, but you will not get the exact note without cutting notches in the floor of your trunk to re-route piping.

 

Trade your sedan in for a coupe.

 

this....

 

Be extremely careful with your '10, in this case I would get rid of it and go with a '11 or '12 instead. If it was so addicted to the turbulent noises from a violent coup, it might as well murder you in the process if you pushed it too hard.

 

Now that's funny, lotsa violent militants out there you know

 

Thanks for the help and the jokes. I can't buy the coup unfortunately. I need to extra back seats with the doors but if I were single. I would have gotten the coup no doubt.

 

a well organized coup is gonna run you a lot more than an Infiniti but once you take over you can have your pick of whatever cars are available in your banana republic.

 

From what I heard, test pipes on a stock exhaust surprisingly give a similar sound.