Fast Intentions Resonated HFC

Viera · 06-02-2010, 06:48 PM

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.

flashburn · 06-02-2010, 06:51 PM

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.

Viera · 06-02-2010, 07:01 PM

Quote:

Originally Posted by flashburn

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.

dlmartin81 · 06-02-2010, 07:23 PM

Quote:

Originally Posted by flashburn

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.

Quote:

Originally Posted by Viera

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.

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

Majestik · 06-02-2010, 09:59 PM

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.

craniac24 · 06-02-2010, 10:04 PM

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.

flashburn · 09-09-2010, 04:01 PM

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.

racerxj17 · 09-09-2010, 04:08 PM

Quote:

Originally Posted by flashburn

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.

flashburn · 09-09-2010, 04:12 PM

Quote:

Originally Posted by racerxj17

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.

racerxj17 · 09-09-2010, 05:01 PM

Quote:

Originally Posted by flashburn

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".

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!

Fly1 Motorsports · 09-10-2010, 02:07 AM

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...

marcussoori · 03-18-2011, 05:38 PM

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!

marcussoori · 03-18-2011, 05:40 PM

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)

marcussoori · 03-18-2011, 11:11 PM

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

anyone else with test pipes get this.....?

06-02-2010, 06:51 PM	#2 (permalink)
flashburn A True Z Fanatic Join Date: May 2009 Location: Central Florida Posts: 1,884 Drives: '12 Corvette GS 6M Rep Power: 20	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. henryy370z likes this.

06-02-2010, 09:59 PM	#5 (permalink)
Majestik Track Member Join Date: Aug 2009 Location: SE Melbourne, Australia Posts: 800 Drives: '13 Jet Black R35GTR Rep Power: 18	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. __________________ 2009 Black 370Z AT7 \| 2010 Satin Black MT6 www.Zclub.com.au - where the Aussie 'Z' Action is at CF AMUSE VESTITO \| FAST INTENTIONS \| STILLEN \| K&N \| EIBACH \| NISMO \| FORMULA1 Also '13 R35GTR Jet Black

06-02-2010, 10:04 PM	#6 (permalink)
craniac24 Enthusiast Member Join Date: Mar 2010 Location: Ronkonkoma, NY Posts: 339 Drives: 2010 PG Roadster Rep Power: 404	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. __________________ 2010 6MT PG Roadster w/Sport & NAV. Stillen Exhaust, Stillen GIII Intake, Eibach Springs, H&R Spacers 15f/20r, SPC Rear Camber Kit. Thanks to Vinny Ten Racing!

09-09-2010, 04:01 PM	#7 (permalink)
flashburn A True Z Fanatic Join Date: May 2009 Location: Central Florida Posts: 1,884 Drives: '12 Corvette GS 6M Rep Power: 20	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. __________________ Current Ride: 2012 Chevrolet Corvette Grand Sport Centennial Edition Carbon Flash 6M Previous Ride: 2009 Nissan 370Z Sport Platinum Graphite 7AT

03-18-2011, 05:38 PM	#12 (permalink)
marcussoori Enthusiast Member Join Date: Mar 2009 Location: USA Posts: 468 Drives: 09 370Z Red AT Sport Rep Power: 18	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! __________________ Stillen CBE & G3 LTIs, Motordyne M370, Berk HFCs, H&R 15/20mm spacers, CiNcity headlights, yellow OEM strut brace, Password: JDM CF engine bay parts, EVO-R CF front bumper parts, CF "Z" badge, VIS CF hood, Fujimura CF "diffuser", Show-N-Go plate frame, Katzkin red interior, interior CF, Pioneer BT-90 full system, Viper SmartStart

06-02-2010, 06:48 PM	#1 (permalink)
Viera Track Member Join Date: Feb 2009 Location: Atlanta, GA Posts: 897 Drives: '09 M.Blue 370Z 6MT Rep Power: 266	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.

09-10-2010, 02:07 AM	#11 (permalink)
Fly1 Motorsports Premium Member Join Date: Jan 2009 Location: Los Angeles Posts: 1,094 Drives: PW 370Z 7AT/Tr/Sp/Nv Rep Power: 20	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...

03-18-2011, 05:40 PM	#13 (permalink)
marcussoori Enthusiast Member Join Date: Mar 2009 Location: USA Posts: 468 Drives: 09 370Z Red AT Sport Rep Power: 18	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) __________________ Stillen CBE & G3 LTIs, Motordyne M370, Berk HFCs, H&R 15/20mm spacers, CiNcity headlights, yellow OEM strut brace, Password: JDM CF engine bay parts, EVO-R CF front bumper parts, CF "Z" badge, VIS CF hood, Fujimura CF "diffuser", Show-N-Go plate frame, Katzkin red interior, interior CF, Pioneer BT-90 full system, Viper SmartStart

03-18-2011, 11:11 PM	#14 (permalink)
marcussoori Enthusiast Member Join Date: Mar 2009 Location: USA Posts: 468 Drives: 09 370Z Red AT Sport Rep Power: 18	Also, is this what I should expect from having test pipes (resonated or non-resonated) installed? anyone else with test pipes get this.....? __________________ Stillen CBE & G3 LTIs, Motordyne M370, Berk HFCs, H&R 15/20mm spacers, CiNcity headlights, yellow OEM strut brace, Password: JDM CF engine bay parts, EVO-R CF front bumper parts, CF "Z" badge, VIS CF hood, Fujimura CF "diffuser", Show-N-Go plate frame, Katzkin red interior, interior CF, Pioneer BT-90 full system, Viper SmartStart

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