HFC Failure, ever have it happen?

spearfish25 · 01-28-2010, 11:23 AM

Quote:

Originally Posted by Zsteve

would the fact that a HFC has less material in it, especially the 200 cell one, cause it to degrade faster? If OEM is around 80,000 miles and those are prolly 400 cell cats then 40,000 miles for 200 cell cats?

And even if thats right then 40,000 should be 2.5 yrs for me.

I doubt the relationship is that simple. I think HFC failure is more related to the associated mods, tuning, and driving style changes that are associated with the HFC addition.

For example, these people are more likely to have other bolt-ons, forced induction, performed some level of tuning and ECU modification, are more likely to run race gas, may drive in trackdays/races, etc etc etc. All of these can lead to situations where cats can 'see' extreme driving conditions, incomplete fuel burn and detonation, higher engine temps...

...all leading to failure.

On a side note, Berk posted in a different thread that they use Magnaflow cores and suggests that these are higher quality cores than those in other HFC options. Is it just me, or is Magnaflow more often associated with inexpensive products and lower quality? I don't think top-of-the-line when I hear about Magnaflow anything.

Zsteve · 01-28-2010, 12:06 PM

Quote:

Originally Posted by spearfish25

I doubt the relationship is that simple. I think HFC failure is more related to the associated mods, tuning, and driving style changes that are associated with the HFC addition.

For example, these people are more likely to have other bolt-ons, forced induction, performed some level of tuning and ECU modification, are more likely to run race gas, may drive in trackdays/races, etc etc etc. All of these can lead to situations where cats can 'see' extreme driving conditions, incomplete fuel burn and detonation, higher engine temps...

...all leading to failure.

On a side note, Berk posted in a different thread that they use Magnaflow cores and suggests that these are higher quality cores than those in other HFC options. Is it just me, or is Magnaflow more often associated with inexpensive products and lower quality? I don't think top-of-the-line when I hear about Magnaflow anything.

Im kinda in the same boat as you there, Ive never heard of them as a top of the line thing but who knows maybe they are. I do know that HJS cats from Germany are top of the line cats. I had a full TBE from Milltek on my last car and they used 200 cell HJS cats, I would get a cel light once every three months but the exhaust was about 2 grand for the full one.

STItoEVOX · 01-28-2010, 07:22 PM

theres a guy on the evo x forums that had his hfc fail, piece broke off and clogged his exhaust flow. in the end when they figured out what happened with his car he went from a little under 300whp to above 400whp.

m4a1mustang · 01-28-2010, 11:55 PM

I have never had any issues with Magnaflow. Maybe things have changed, but back in the early 2000s they were regarded pretty highly in terms of quality. I know the kit I bought for my Mustang was nicely done... though every Flowmaster-loving Mustang driver referred to them as Magnajunk.

J_Z · 11-05-2013, 08:18 PM

chiming in way late but i blew my my left cat yesterday does anybody know what the insides of an invidia gemini muffler look like? worried its clogged

01-28-2010, 07:22 PM	#18 (permalink)
STItoEVOX Base Member Join Date: May 2009 Location: Waimalu, Hawaii Posts: 105 Drives: 08 Evolution X Rep Power: 16	theres a guy on the evo x forums that had his hfc fail, piece broke off and clogged his exhaust flow. in the end when they figured out what happened with his car he went from a little under 300whp to above 400whp. __________________ I want to trade my Evo X for your 370 Z... Seriously.

01-28-2010, 11:55 PM	#19 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	I have never had any issues with Magnaflow. Maybe things have changed, but back in the early 2000s they were regarded pretty highly in terms of quality. I know the kit I bought for my Mustang was nicely done... though every Flowmaster-loving Mustang driver referred to them as Magnajunk. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

11-05-2013, 08:18 PM	#20 (permalink)
J_Z Base Member Join Date: Dec 2011 Location: tempe az Posts: 27 Drives: 2011 370z Roadster Rep Power: 14	chiming in way late but i blew my my left cat yesterday does anybody know what the insides of an invidia gemini muffler look like? worried its clogged __________________ invidia cbe, berk hfc, gtm sc, passport, stillen front fascia, nismo oil cooler, z1 struts,

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