From what I understand the two top choices on exhausts on this forum are the Fast Intentions and the Ark Grip. I'm sure power gains are pretty similar so here is my question. Is it accurate to say that the Ark has a deeper tone than the other exhaust systems available? That's what I have gathered from weeks on youtube, but as most of you know different camera types and setups make a big difference. If it helps, I have a 2011 G37 X sedan and will also be adding a Stillen Gen 3 CAI or one that's similar. I would like the additional power gains of HFC's but I do not want any rasp or drone whatsoever. I'm mainly looking for that smooth, deep tone. Thanks in advance.

 

I do not have experience with either of the one's you have mentioned, but I do have a nice, deep sounding exhaust without any drone (Keeps a very nice VQ note). This is an OEM piece and is less expensive and easier to install than a full cat back. I just wanted to show you another option that's out there before you pull the trigger. This is the Infiniti Sport Accessory Muffler.

Cold start with revs at 3k and less (click thumbnail to play video):