HFC Cats

Otis · 09-14-2016, 03:28 PM

Do they really add HP and apprx. how much?
Can you really notice already having 334 HP.

I have only installed Invidia Gemini

Just wondering if:

Will it sound better? I would not mind a bit louder actually

worth the cost?

Thanks

Array · 09-14-2016, 03:47 PM

Cost/Power Gains/Sound will be different with just about any HFC built for these cars, there are many many many threads on this subject, search the site using google simply adding "The370z.com" after your search will bring you here

Dont expect more than 10-12HP, your "Butt" dyno will not tell a difference

Berk/FI seems to be fan favorites given sound and power gains and price

Heff · 09-14-2016, 04:07 PM

I have the Gemini installed as well and recently installed the Berks HFC and it gave it a much better tone and overall sound and its a bit louder but for performance I didn't actually notice any real difference

RumbleFish · 09-14-2016, 05:46 PM

louder sound = yes

HP increase = minimal, maybe 5+ ponies more

Chan Chee Hoe · 09-14-2016, 06:20 PM

Quote:

Originally Posted by RumbleFish

louder sound = yes

HP increase = minimal, maybe 5+ ponies more

So little gain for High Flow Cats.?I thought over 15 Bhp gain.?

Spooler · 09-14-2016, 06:21 PM

Unless you have long tube headers there is no way you have 334hp. Just sayin.

jaedub · 09-14-2016, 06:35 PM

If you're worried about spending too much, why not try test pipe? Yes, it'll be louder but it's less than half the cost of HFC. Plus, TP has a better gain than HFC.

Adding HFC to your Invidia will probably add around 4~7 hp. Not significant but nevertheless it'll increase power and sound. All in all, I'm betting 305 WHP with your exhaust set up. You can try tuning it after which can get you a bit more power.

JesseG805 · 09-15-2016, 05:23 AM

the hissing sound will get way louder...and more rasp...but you get used to it

Otis · 09-15-2016, 07:36 AM

2013Z.. says 332 HP for coupe and 350 HP for Nizmo

so, public school math 332 + Invidia Gemini exhaust (2) = 334 HP

Didn't say I graduated - LOL

Just saying..

I am leaning toward the Berk.. everybody does the F.I. - i like to be different!

Chuck33079 · 09-15-2016, 07:40 AM

Quote:

Originally Posted by Otis

2013Z.. says 332 HP for coupe and 350 HP for Nizmo

so, public school math 332 + Invidia Gemini exhaust (2) = 334 HP

Didn't say I graduated - LOL

Just saying..

I am leaning toward the Berk.. everybody does the F.I. - i like to be different!

The motor is 332 at the crank. Aftermarket parts are measured in whp. You're probably at 280-290 whp. Cats will add another 10ish whp. Cats/tp, intake, exhaust and tune will get you 315-330whp depending on dyno. You'll absolutely feel that, plus the tune has a lot of other benefits (fan control, throttle response, etc.).

SouthArk370Z · 09-15-2016, 09:30 AM

As others have said, just slapping HFCs on the car won't make a lot of difference HP-wise. But, combined with some relatively inexpensive intake mods (search is your friend; see Array's tip above) and a tune, you should see a definite increase in smiles per gallon.

DeliriousClam · 09-15-2016, 10:54 AM

figure this would be a good place to ask this question. what about going from HFCs to test pipes? I have a set of AAM non-res test pipes waiting for install

Chuck33079 · 09-15-2016, 10:56 AM

Quote:

Originally Posted by DeliriousClam

figure this would be a good place to ask this question. what about going from HFCs to test pipes? I have a set of AAM non-res test pipes waiting for install

A few hp, probably not worth paying labor to swap. If you DIY, not the worst idea if you're trying for every last hp. Money would be better spent putting it toward gears on a NA build.

DeliriousClam · 09-15-2016, 10:59 AM

Quote:

Originally Posted by Chuck33079

A few hp, probably not worth paying labor to swap. If you DIY, not the worst idea if you're trying for every last hp. Money would be better spent putting it toward gears on a NA build.

I'm doing it myself. I bought them to lock in a sponsorship so I may as well install them.

Still not sure if I want to stay NA and do gears or go FI eventually

Chuck33079 · 09-15-2016, 11:00 AM

If you've already got them and you live in a state where emissions isn't a problem, go ahead and DIY.

09-14-2016, 03:28 PM	#1 (permalink)
Otis Base Member Join Date: Jul 2016 Location: NC Posts: 60 Drives: 2013 370Z Coupe Rep Power: 8	HFC Cats Do they really add HP and apprx. how much? Can you really notice already having 334 HP. I have only installed Invidia Gemini Just wondering if: Will it sound better? I would not mind a bit louder actually worth the cost? Thanks

09-14-2016, 03:47 PM	#2 (permalink)
Array Enthusiast Member Join Date: Jun 2014 Location: home.jpg Posts: 286 Drives: '12 Pearly White Rep Power: 10	Cost/Power Gains/Sound will be different with just about any HFC built for these cars, there are many many many threads on this subject, search the site using google simply adding "The370z.com" after your search will bring you here Dont expect more than 10-12HP, your "Butt" dyno will not tell a difference Berk/FI seems to be fan favorites given sound and power gains and price SouthArk370Z likes this. __________________ 2012 370z 7AT- ES2 with PSS, K&N Drop-ins, LED's all around, Berk HFC, FI CBE non-res, KW V1's 2003 A4 5MT- The Beater

09-14-2016, 05:46 PM	#4 (permalink)
RumbleFish Premium Member Join Date: Oct 2013 Location: Los Feliz, Ca. Posts: 1,212 Drives: '10-Sport-M6 Rep Power: 8239	louder sound = yes HP increase = minimal, maybe 5+ ponies more __________________ How far, this...Utopia? F.I. CBE V2/Stillen G3 CAI/GTM 25R OC/EcuTek tune (Specialty Z)/ KW V3's/Stillen Sway bars/SPC rear camber kit/Z1 FUCA/Mich. PSS4S 255/35-295/30

09-15-2016, 09:30 AM	#11 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324197	As others have said, just slapping HFCs on the car won't make a lot of difference HP-wise. But, combined with some relatively inexpensive intake mods (search is your friend; see Array's tip above) and a tune, you should see a definite increase in smiles per gallon. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

09-15-2016, 10:54 AM	#12 (permalink)
DeliriousClam A True Z Fanatic Join Date: May 2015 Location: NJ Age: 30 Posts: 3,758 Drives: 12 Base Sport Rep Power: 54271	figure this would be a good place to ask this question. what about going from HFCs to test pipes? I have a set of AAM non-res test pipes waiting for install __________________ Stillen, AAM, Shine Auto, Fujimora, Swift, EVO-R, Carbon Fiber Element, Nitrous Outlet MECP Advanced: CEA26671 Most of what I post here are artistic works of fiction and falsehood. Only a fool would take anything I post here as fact.

09-14-2016, 04:07 PM	#3 (permalink)
Heff Base Member Join Date: Mar 2016 Location: Arizona Posts: 4 Drives: 16 Nissan 370Z Rep Power: 9	I have the Gemini installed as well and recently installed the Berks HFC and it gave it a much better tone and overall sound and its a bit louder but for performance I didn't actually notice any real difference

09-14-2016, 06:21 PM	#6 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,504 Drives: 2013 Nismo 370z Rep Power: 2684391	Unless you have long tube headers there is no way you have 334hp. Just sayin.

09-14-2016, 06:35 PM	#7 (permalink)
jaedub Track Member Join Date: Aug 2010 Location: Los Angeles Posts: 906 Drives: 2010 Black 370Z MT Rep Power: 304	If you're worried about spending too much, why not try test pipe? Yes, it'll be louder but it's less than half the cost of HFC. Plus, TP has a better gain than HFC. Adding HFC to your Invidia will probably add around 4~7 hp. Not significant but nevertheless it'll increase power and sound. All in all, I'm betting 305 WHP with your exhaust set up. You can try tuning it after which can get you a bit more power.

09-15-2016, 05:23 AM	#8 (permalink)
JesseG805 Base Member Join Date: Feb 2015 Location: Simi Valley, California Posts: 121 Drives: 12 370z 6mt Rep Power: 10	the hissing sound will get way louder...and more rasp...but you get used to it

09-15-2016, 11:00 AM	#15 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	If you've already got them and you live in a state where emissions isn't a problem, go ahead and DIY. DeliriousClam likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

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