also another thing Tony @ FI pointed out was that there is a considerable difference in sound between the AT and MT, where the MT with HFC and catback is much quieter than the AT, just to bare in mind if you have the MT....

 

The videos of the FI cat-back sound great, but its hard to tell if that is what it sounds like in person.

I want that coupe sound, but not too much more or my wife will complain and I will be forced to sell mine as well. No need for that to happen to 2 people.

My feeling is that I either go with the cat-back or the HFC, but not likely both. I have read a ton of good things about FI, so that will be my choice. Not that Stillen is bad by any stretch. Perhaps the HFC and stock is the better option, I just worry that will be a very subtle increase in sound and power and leaving me wanting more.

The MT is quieter? I would have guessed just the opposite. I have a G35xS AT.

Decisions decisions.

 

Yes the AT is a bit louder than the MT.
But it's best to see how it sounds like in person.
Videos sometimes don't do justice.

 

Em..Your wife will love HFC sound.It's more quiter that stillen and FI Cat back.
With just HFC with Stock is more like coupe except shifting.the coupe is shifting faster than our sedan as mine experience..Anyone agree?

 

My wife complained about the sound... she says that it takes away from the luxury of the car. She has only heard it when I leave in the morning and the car grrr's it's way up and out of my driveway every morning.
I took her for a ride a few weeks ago (She's hardly ever in my car) and she was very surprised at how good the car sounds from inside.
It only sounds loud in the morning because I start it in the garage and then drive up a steep driveway. Once on the road, it sounds gorgeous.

I love it, and it's now wife approved (although she still likes stock better)

 

I just ordered the FI hfc's today.
Let hopes that she like sound

Thank's to all and to Tony of FI.