High Flow Cats

Savage08 · 08-27-2009, 08:49 PM

I am ready to buy a set of HFC's. I was wondering if there is any advantages/disadvantages between the following four brands? Is one better than the other(s) in some way or are they really the same product with a different name? Any insight is appreciated. Thanks.

I am undecided between:

Fast Intentions
Berk
Stillen
AAM

Red370 · 08-27-2009, 10:40 PM

i imagine theyre all the same length, use same cores, I hear the Stillen dont like being bolted to exhausts other than there own, fitment issues etc. Gains are similar for all. Pick a brand, thats basically it.

ssqpolo · 08-27-2009, 10:46 PM

if u want a used pair of berks, mattkim85 has some for sale

YellowStar · 08-28-2009, 02:27 AM

Quote:

Originally Posted by Savage08

I am ready to buy a set of HFC's. I was wondering if there is any advantages/disadvantages between the following four brands? Is one better than the other(s) in some way or are they really the same product with a different name? Any insight is appreciated. Thanks.

I am undecided between:

Fast Intentions
Berk
Stillen
AAM

Id go with the fast intentions cats, Longer defoulers make a less chance of throwing a CEL.

Bster · 08-28-2009, 03:25 AM

Quote:

Originally Posted by Red370

i imagine theyre all the same length, use same cores, I hear the Stillen dont like being bolted to exhausts other than there own, fitment issues etc. Gains are similar for all. Pick a brand, thats basically it.

Actually, I don't think they are using the same cores.

FI uses 300 cell whereas Berk and AAM uses 200 cell cores. I'm not sure about the stillen though.

I'm not so sure the difference between 300 vs 200 cell cores can be felt or would make a big difference.

FI is slightly cheaper to buy, if that is a pulling factor!

Savage08 · 08-28-2009, 12:03 PM

interesting...so power gains are essentially equal and fi are cheaper and less likely to throw codes... seems like a no brainer then.

OVERZLUS · 08-28-2009, 01:34 PM

Are you planning to upgrade the CBE or have you already done so? If so, go with the same brand as the CBE to eliminate fitment issues. If not, it doesn't really matter (as far as performance gains). However, I do like F.I.'s craftsmanship and price.

Togo · 08-28-2009, 06:32 PM

I take it 200 Core would essentially flow better?

Red370 · 08-28-2009, 06:40 PM

Quote:

Originally Posted by Togo

I take it 200 Core would essentially flow better?

no difference in gains.

Togo · 08-28-2009, 06:49 PM

Well I don't suspect that there really would be too much of a difference. I was just figuring if its a lower core count then it must theoretically flow better

frost · 08-28-2009, 06:58 PM

Quote:

Originally Posted by Togo

Well I don't suspect that there really would be too much of a difference. I was just figuring if its a lower core count then it must theoretically flow better

Kind of what I thought.

m4a1mustang · 08-28-2009, 07:05 PM

It all depends on how much air is being pushed through the cores. If you keep increasing the air flow, the 300 cell count core should become a restriction before the 200 cell count does. How much cfm it takes to become a restriction... who knows. But it definitely looks like it makes no difference on a N/A Z.

frost · 08-28-2009, 07:06 PM

Quote:

Originally Posted by m4a1mustang

It all depends on how much air is being pushed through the cores. If you keep increasing the air flow, the 300 cell count core should become a restriction before the 200 cell count does. How much cfm it takes to become a restriction... who knows. But it definitely looks like it makes no difference on a N/A Z.

If I understand you correctly, you are saying that the stock-ish engine does not put out enough exhaust for the cell count to matter?

m4a1mustang · 08-28-2009, 07:08 PM

Quote:

Originally Posted by frost

If I understand you correctly, you are saying that the stock-ish engine does not put out enough exhaust for the cell count to matter?

For 200/300 cell count, it definitely seems like it.

Togo · 08-28-2009, 07:11 PM

Anyone know what a stock cat's core count is?

08-27-2009, 08:49 PM	#1 (permalink)
Savage08 Base Member Join Date: Mar 2009 Location: Ca Posts: 37 Drives: 370z 6mt tour/sp Rep Power: 16	High Flow Cats I am ready to buy a set of HFC's. I was wondering if there is any advantages/disadvantages between the following four brands? Is one better than the other(s) in some way or are they really the same product with a different name? Any insight is appreciated. Thanks. I am undecided between: Fast Intentions Berk Stillen AAM

08-28-2009, 01:34 PM	#7 (permalink)
OVERZLUS Base Member Join Date: Aug 2009 Location: VA Posts: 34 Drives: 09 Nissan 370Z Sport Rep Power: 16	HFC's Are you planning to upgrade the CBE or have you already done so? If so, go with the same brand as the CBE to eliminate fitment issues. If not, it doesn't really matter (as far as performance gains). However, I do like F.I.'s craftsmanship and price. __________________ '09 Magnetic Black 370Z 7AT \| 35% Tint \| Audio System \| Fast Intentions CBE w/ 12" Resonators

08-28-2009, 07:05 PM	#12 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	It all depends on how much air is being pushed through the cores. If you keep increasing the air flow, the 300 cell count core should become a restriction before the 200 cell count does. How much cfm it takes to become a restriction... who knows. But it definitely looks like it makes no difference on a N/A Z. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Berks vs AAM High flow cats?	zulus370Z	Intake/Exhaust	28	12-09-2015 01:45 AM
AAM Competition High Flow Cats	Rob@Altered	Group Buys	3	12-03-2009 03:04 PM
looking to buy Berk High Flow Cats	zulus370Z	Parts for sale (Private Classifieds)	0	08-22-2009 09:45 PM

08-27-2009, 10:40 PM	#2 (permalink)
Red370 A True Z Fanatic Join Date: Jul 2009 Location: Kaiserslautern, Germany Posts: 4,391 Drives: your mom to church Rep Power: 296	i imagine theyre all the same length, use same cores, I hear the Stillen dont like being bolted to exhausts other than there own, fitment issues etc. Gains are similar for all. Pick a brand, thats basically it.

08-27-2009, 10:46 PM	#3 (permalink)
ssqpolo Track Member Join Date: Jan 2009 Location: Florida Posts: 882 Drives: '12 Black Nismo Rep Power: 267	if u want a used pair of berks, mattkim85 has some for sale

08-28-2009, 12:03 PM	#6 (permalink)
Savage08 Base Member Join Date: Mar 2009 Location: Ca Posts: 37 Drives: 370z 6mt tour/sp Rep Power: 16	interesting...so power gains are essentially equal and fi are cheaper and less likely to throw codes... seems like a no brainer then.

08-28-2009, 06:32 PM	#8 (permalink)
Togo A True Z Fanatic Join Date: May 2009 Location: E. Northport, NY Posts: 7,597 Drives: Stuff Rep Power: 657	I take it 200 Core would essentially flow better?

08-28-2009, 06:49 PM	#10 (permalink)
Togo A True Z Fanatic Join Date: May 2009 Location: E. Northport, NY Posts: 7,597 Drives: Stuff Rep Power: 657	Well I don't suspect that there really would be too much of a difference. I was just figuring if its a lower core count then it must theoretically flow better

08-28-2009, 07:11 PM	#15 (permalink)
Togo A True Z Fanatic Join Date: May 2009 Location: E. Northport, NY Posts: 7,597 Drives: Stuff Rep Power: 657	Anyone know what a stock cat's core count is?