Fast Intentions Resonated HFC
 

Does anyone have this? I can't find one single review. Very surprising...seeing that their exhaust is so popular I can't imagine why more people haven't bought this as well. :confused:

The resonated high flow cats are more popular in the G37 crowd. I have not sold that many to the 370 community.

Tony

Berk HFC FTW? it would seem everyone has the Berk............

the OP is not talking about HFC alone.. He is talking about "RESONATED" HFC.. nobody do them except toni

I'm interested in a RHFC review as well.

Can you give me a few links to any reviews that were done by the G37 crowd?

I ordered F.I HFC's... I believe they were resonated since I didn't see an option. Didn't really pay too much attention.

Good gains... made the exhaust really loud... and had a really audible hiss on deceleration.

Umm, you would know if they were resonated because they look like this.

http://www.fastintentions.com/images...5-image115.jpg

As opposed to this.

http://www.fastintentions.com/images...4-image111.jpg

Mine were NON-Resonated then. Thanks DL

I didn't even know there was an option for Resonated HFC's from FI. There isn't any sort of mention of it in the FI thread here, only the non-resonated ones.

I think there would be more interest in it if people knew it existed in the first place. :)

Maybe Tony can offer a special intro price to the first 5 members of this forum so we can get some good reviews!!! :tiphat:

Would there be any less gains on them compared to the non-resonated ones? Or is the only difference the volume?

I'd go out on a limb and say there would be no difference in gain, only sound.

I'd like to hear more from Tony about this then. If it reduces the drone, but keeps the raucousness of the FI CBE+HFC combo, then I might be interested in it. I don't want it to sound subdued and I don't want to lose any more performance compared to non-resonated.

Like Cyberium had mentioned, I don't think there are any differences in gains, just sound. As posted on the Fast Intentions website: The RHFCs is "Recommended for the enthusiast who wants to remove their stock cats but keep the sound level to a minimum. This is our quietest option available."

This would be the same as purchasing the non-resonated CBE vs. the 18" resonated CBE. Only difference would be the sound.

I hope I'm correct. Tony, please correct me if I am wrong.

It makes sense, but I'd still want to know what kind of difference in sound levels we would get from it. I definitely don't want it to be as quiet (or close to) stock, but if it is still plenty loud and reduces some of the drone, that would definitely be interested to me.

Honestly, I think it would be pretty damn quiet. But, it's hard to say because I don't know what is loud to you, and vice-versa. It'll definitely be louder than stock, but probably not as much. I have the 12" CBE with stock cats, and I still want it LOUDER! I hope you get your answers soon.

:iagree:

Here's what I think...say you ordered the F.I. CBE w/18 res....

(F.I. CBE w/18 res. w/stock cats) < (F.I. CBE w/18 res. w/RHFC) < (F.I. CBE w/18 res. w/HFC)

Like someone said on the previous page, it would be like the same comparison as the F.I. CBE w/o res. vs F.I. CBE w/18 res.

So to answer your question, with a doubt that it will be louder than the stock cats. How much I don't know, but it won't be as loud as the non-res HFCs.

That's the best anyone can say without an official review with video or whatever

I've ordered the FI 18" Res Cbe with carbon fibre cats and also the f.I resonated hfc's (#137).

Tony says it'll be shipped to Australia early to mid next week so I should have it installed in the next 2-3 weeks.

I will post up vids etc the moment it's done.

My guess is that it alters the note of the exhaust, without necessarily increasing the volume. What I'm curious about more than anything else, is whether or not the resonators eliminate the rasp that's so typical of HFCs.

The purpose of the resonators are to cut down on rasp; therefore, cutting down on volume as well. Make sense?

Yes...what I'm saying though is that while I don't think it would be any louder than the stock HFCs, I don't think they would be any quieter either. I assume that resonated HFCs would simply change the "tone" of the exhaust note.

Make sense? :p

Our resonated high flow cats will be louder than the stock cats. They are OUR quietest option available. They will sound very similar to our high flow cats just slightly quieter. They are designed for the person who wants aftermarket cats with the least amount of sound. The beauty is that since the resonator is straight through the performance is the same as the regular high flow cat!

Bump...Anyone here install the FI RESONATED HFCs ALONG w/ the 18" TDX CBE? I've seen vids/reviews of the combo w/ the standard HFCs...but would like to hear real world feedback on the resonated option.

Thanks!

I'll just say I'm REALLY glad I didn't get the resonated ones. I would've been disappointed if it was quieter than my current setup.

keep in mind quiet is an opinion. my last truck (s/c 4.0 v6) had 3" pipe, with a small 14" muffler, no cats. that was LOUD. i have had the stillen w/ HFC, the F.I W/ HFC, and now im on the F.I 18" with stock cats. i get the most complements on sound with my current set-up. its not ear bleeding loud, but for some, its still louder than they like.

Obviously it's subjective. I was just reflecting back on my previous posts in this thread where I was wondering about the resonated option.

just wanted to throw it out there. didnt want people buying the F.I 18" expecting it to sound "stock". :tiphat:

I'd love to try out some resonated HFC. i only got rid of them to get rid of the hiss they created, but i loved the WOT tone!

Thanks for the opinions guys. Flash...I've watched your vids...you definitely have got a great tone w/ your setup, but I'd love to actually hear the difference w/ resonated HFCs. I guess there may only be one way to tell. Gonna call Tony in the AM...

Hi Guys,

I know it's months overdue (#137) but here's the link to my journal and videos of my FI Setup: Majestik's 370Z 40th QuartZ - Z Club - Australia's Largest Nissan 370Z and Nissan 350Z Forum

Oh, and excuse the artistic flair. It's so that I minimise any issues with The Law..

F.I. 18" Resonated HFC with CF Mufflers and F.I. Resonated HFCs.

Zero Rasp. Barely Audible Hiss. Zero drone in 4th@60kmph, 5th@80kmph, 6th@100kmph.

If I haven't said it already, lemme say it again..

"Thanks Tony!" :happydance:

Wow, VERY quiet. Tony, a question:

1) FI CBE + straight pipes

louder than

2) FI CBE + resonated straight pipes;

both of the above WAY (?) louder than

3) FI CBE + HFCs;

the above slightly (?) louder than

4) FI CBE + resonated HFCs?

To clarify:

Are straight pipes way louder than HFCs?

Whether you look at your two types of HFCs or your two types of straight pipes, does the resonation lower sound level, or just eliminate rasp and hissing? Finally, does the resonation raise or lower the sound pitch?

Thanks!

P.S.: My current setup is:

1) Stillen long tube intakes + CBE

2) Berk HFCs (hate the rasp, which is why I want your resonated HFCs or resonated straight pipes)

Also, is this what I should expect from having test pipes (resonated or non-resonated) installed?

http://www.the370z.com/nismo-370z/29...pipes-get.html