Just Replaced My Primaries With HFC

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Jun 12, 2011 | 07:48 PM

#26

pearlpower

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From: Southern California

E55 w/ goods, Z32 Project underway

Quote:

Originally Posted by guysandiego

keep us updated on how those cats hold up --- I recall someone having the meat of the cats coming loose -- thus rattling and causing all sorts of annoying problems -- I just wonder if the cheaper cats can hold up to our cars power output.

Ditto, curious as well. Many stories of high flow cats blowing out, curious how these hold up over time, thanks for posting.

Jun 13, 2011 | 03:27 PM

#27

Johncy2000

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From: Atherton, CA

2019 GLS63 AMG Diamond White

You guys are getting me paranoid about my car now. haha I might buy a spare set of race cats just in case.

Jun 13, 2011 | 03:48 PM

#28

guysandiego

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From: Jacksonville, Florida

2006 E55 AMG --old cars -- E39 M5, 2.7tt Audi S4, E36 M3 **Ducati 996, 748

Not trying to make you paranoid but now you know -- Do a search -- I think your idea is great and I would like to follow -- just dont want to waste $$$ on cats that may break apart --- parts and labor to replace them again -- no fun !!!

Jun 13, 2011 | 03:54 PM

#29

Johncy2000

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2019 GLS63 AMG Diamond White

I just read about the thunderbolt race cats holding up for 3 years on modded mustangs.

Jun 18, 2011 | 03:11 AM

#30

pearlpower

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From: Southern California

E55 w/ goods, Z32 Project underway

Good info, might look into those myself. Plan on a 185mm upgrade, these, fuel rail, and final tune and call it a day.

Jun 18, 2011 | 09:05 AM

#31

jmb614

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From: West

E55 AMG

I would do the bigger injectors as well if you haven't already. Just my two pennies.

Jun 18, 2011 | 10:28 AM

#32

novae500

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From: Northern VA

W211

on my other car, i bought some race cats from autopartswarehouse and after 3 yrs the insides are rattling and getting a CEL code now

Jun 18, 2011 | 03:40 PM

#33

Johncy2000

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From: Atherton, CA

2019 GLS63 AMG Diamond White

All I can say is that these cats are what won me the race against the 476whp cobra. It really made that big of a difference. Car is so much faster and louder now.