How about performance gains? I care about that the most

And that will actually disapointing you the most... Don't expect the exhaust alone will give you much difference. Better air flow exhausts will gain a lot on turbo cars but not NA applications. They are all about the same. When you pick up an aftermarket exhaust on a NA car, you should only care about the sound and the look...

And for that matter, I will go for the Fast Intentions.

well i know it wont give me much! but what are the expected hp gains?

around 20 whp with Fast Intentions if that's your first power mod. Stillen advertised 18 whp.

Is it proven gain of 20whp for Fast intentions? Any one have results?

Yes, if you actually saw my post that responded to your question, you would have clicked on the link I provided, and see near the top of the intake/exhaust section this thread:

http://www.the370z.com/intake-exhaus...continued.html

You would see pictures of the dyno sheet.

Come on now, do some looking around the forum.

If you want performance gains and will doing future modding, you can get the invidia cbe and stillen g3's for approx the same cost as just a fi or stillen cbe. If budget is something to consider.

You'll see the most performance out of the Fast Intentions.

You'll want to read the thread as there are different variations.

12" or 18" resonators (which affect in cabin noise as well as noise in general)

Stainless Steel vs Carbon FIber Mufflers. The CF mufflers look sick, more stealth and allow a little more sound out, so a nice balance if u were to go 18" resonators (which are quieter but go with CF mufflers)

Anyways, its some good reading...go through the pages, get a feel for why people love it etc.

+1 for ARK GRIP. Great growling sound and cool blue tips.

A buddy of mine has the blue-tipped ARK on a Hyundai Genesis (2013). It looks good, sounds good, and made good power. It's not a 370z but the product is very nice.

If you get the F.I. seriously consider the 18" resonator. I started with the 12" and ended up having to upgrade because it simply made too much noise too much of the time. It sounded great, but my hearing was taking a beating. There is no performance difference between the two. The 18" has the same great sound, but it's about 30% less loud.

^^Yours is the carbon fiber or ss? Carbon fiber is slightly louder too. Performence wise, what's the difference between the stock Nismo and FI cbe? What your butt dyno tells you? Have you ended up with a new tune?

The FI Dyno chart shows about a 20HP gain. Couple that with a high flow intake, and together you probably would gain about 25HP. But this is not all - it's the throttle response that's gonna dazzle your senses. By allowing the engine to breath to it's capacity, the car will appear to just launch at the slightest accelerator pedal pressure.

Add to that the deep, but not obnoxious, throaty growl of the 18" Resonated FI Exhaust (with FI Resonated High Flow Cats, its much like a Ferrari I was told), and mirror like shine of the SS cans, and it becomes worth every dollar spent, and every minute of wait time...

You forgot NON-RESONATED FTW!!!!:nutswinger:

http://www.youtube.com/watch?feature...&v=Huj6kZdpacY

Haha, yes, forgot about that, most be the most beastly set up! Non resonated :tup:

I went with 18" resonators so that there wouldn't be too much drone in the cabin.

When I added the Motordyne ART Pipes, gave me back the low end torque I lost and more growl.