ChinkyChoy

iTrader: (2)

Just need some reassurance

Plannin on picking up some FI HFC but i can either shell out the extra money and wait for the RHFC or i can pick up a slightly used non resonated HFC right now.

this will be paired with an ARK catback which i think i ve gotten used to so its not as loud as i want it to be lol

So my question to you is:
Do you think the RHFC are worth the extra money and time? or should i just go with the non-resonated ones for about $450

AroundTheG37

iTrader: (8)

I think I know who is selling those as he had the exact setup as you. He said it was loud but not too crazy but I guess that's all relative.

Daddy Fat Sacs

iTrader: (15)

thats all a personal preference on how "loud" you want your car to be. Obviously the RHFC will be quieter so its all up to you. I'm personally going with the RHCF, but I also have Stillen and absolutely love the way my car sounds.

ChinkyChoy

iTrader: (2)

sounds good appreciate all the inputs. I don't mind it being "loud" I just don't want rasp and I know FI always makes some quality stuff.

Just want to make sure I m not going on an impulse buy for HFC maybe its better to wait and spend the extra coin on some RHFC

Rochester

iTrader: (8)

I bought the resonated cats because after consuming a few years of anecdotal evidence, I came to the conclusion that the non-resonated cats run a higher risk of a raspy exhaust when mated to an aftermarket catback. Right or wrong, that's the opinion I established, and the reason I went with FI RHFC. I'll see how well that plan works next year, when I install a catback. (knock on wood) BTW, I'm also planning on the ARK Grip.

You know, the FI cats have a 300 cell count, compared to the typical 200 cell count of most other brands, so that might come into play, too.

If I were in your position, I'd get the non-resonated cats, because you can do that now, and save over $200. Otherwise, you're shelling out more money for the privilege of waiting 2 months... which leads us right into Winter. (Assuming you live where winter matters.)

ANMVQ

iTrader: (13)

I will go the other way and say no, I have Z1 HFC's $400 Shipped, I love the sound and I'm not a LOUD guy. And having the FI RHFC's before the tone and sound level is very close to the same, I NEED to get a vid of the Z1's so I can compare it to the vid of The FI ones I did earlier this year. But I don't think the extra is warranted.

ChinkyChoy

iTrader: (2)

awesome I really appreciate the input.

So I spoke with Lance and I found out that because I have an ARK exhaust which has 2.5" piping it would be better off trying to find HFC that match that piping which would be what the coupe uses and since all the Cats are interchangeable I will probably be looking to find some coupe ones. He also said that since ARK is one of the louder exhausts the resonators would be a good idea.

Rochester

iTrader: (8)

Alfredo24pr has an ARK Grip cat-back mated to a FI RHFC on a G37S Sedan 7AT. I don't recall reading anything about 2.25" to 2.5" fitment considerations.

I liked reading that. Cool.

twin_snails

iTrader: (2)

My FI RHFC's are 2.5" piping and exhaust is also 2.5" piping. FI's default diameter for sedans is 2.25" I believe. I had to upgrade to the 2.5" piping on the exhaust. I'm glad I did too, because it's very loud.

I'm interested to hear you guys that are going with the ARK / FI RHFC's combo post some sound vids.

AroundTheG37

iTrader: (8)

Doesn't going up to the 2.5 piping hinder performance a bit? Also, is there a difference in loudness between the 2.25 and 2.5 or is it negligible?

ANMVQ

iTrader: (13)

That's a good question I have 2.5 on my sedan but again my catback is off my coupe . The Z1 HFC's are 2.5 also .

The Z1 High Flow Catalytic Converters are fully constructed of Stainless Steel. Using a 300 cpsi Stainless steel spiral wound core, they are the highest flowing bolt on converter available that is OBDII compliant. The Stainless Steel cores are high heat resistant and offer excellent flow characteristics. The Z1 High Flow Catalytic Converters are a great upgrade while keeping your car "49 State Street Legal".
Each order includes: on pair of High flow cats, one pair of Metal multilayer 2.5 inch 3 bolt gaskets, and one pair of composite 2.5 inch 2 bolt gaskets, and all necessary hardware.

For 378$ cant go wrong

PongSanity

iTrader: (5)

I have fi hfc paired with ark exhaust. It's not that much louder than oem cats to me. Get the used hfc... won't regret it. ..

Rochester

iTrader: (8)

Well, I have the resonated FI cats, up against the OEM cat-back, and yet the differences are obvious to me. That said, I'd very much like it to be louder.

So I suppose everything is relative when it comes to opinions like this.

AroundTheG37

iTrader: (8)

I'm going to be quite displeased if the HFC's don't make my car sound significantly louder when paired with my FI catback. Don't get me wrong, I love the tone of my catback, I just need more volume!

ChinkyChoy

iTrader: (2)

I heard that HFC arnt as loud as Test pipes but it does help to make the sound deeper which is kinda what I m going for