View Full Version : high flow cats?
Dutch_A6
02-20-2018, 05:42 PM
Does anyone know if there are any high performance cats for our cars (3.0T)? I'm getting the P0420 code so the bank 1 cat needs to be replaced and I don't really want to just buy a reg OEM cat if there are any other options.
Dasquade
02-21-2018, 12:06 AM
Since you Dutch (right?) you might want to contact JM Tuning (dutch compagny)...
Dutch_A6
02-21-2018, 12:24 PM
I'm dutch but I live outside of St. Louis so I'm in the good ole USA.
Dasquade
02-21-2018, 12:32 PM
Oh my bad, should of looked at your location instead of name :p. Sorry can't help in that case....
nick1980
02-23-2018, 07:35 AM
Piggie pipes
wwhan
02-23-2018, 02:22 PM
Does anyone know if there are any high performance cats for our cars (3.0T)? I'm getting the P0420 code so the bank 1 cat needs to be replaced and I don't really want to just buy a reg OEM cat if there are any other options.
Are you looking for something similar to this?
JH Motorsports Exhaust - Cat-Pipes - Stainless Steel, 2.5" (JHM) for B8 S4-S5 3.0T $845.00 (https://www.speedlifemotorsport.com/exhaust-cat-pipes-stainless-steel-2-5-jhm-for-b8-s4-s5-3-0t/)
https://cdn2.bigcommerce.com/n-zfvgw8/yy0wvhk/products/2774/images/3878/JHM-B8-30T-Cat-Pipes__85916.1468687108.1280.1280.jpg?c=2
Dutch_A6
02-23-2018, 04:27 PM
Are you looking for something similar to this?
JH Motorsports Exhaust - Cat-Pipes - Stainless Steel, 2.5" (JHM) for B8 S4-S5 3.0T $845.00 (https://www.speedlifemotorsport.com/exhaust-cat-pipes-stainless-steel-2-5-jhm-for-b8-s4-s5-3-0t/)
https://cdn2.bigcommerce.com/n-zfvgw8/yy0wvhk/products/2774/images/3878/JHM-B8-30T-Cat-Pipes__85916.1468687108.1280.1280.jpg?c=2Yes, you think they work on our C7 card since they are made for the S4?
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3.0t test pipes/cats are all the same. Wouldn't touch JHM cats with a 10 foot pole though...
Dutch_A6
02-23-2018, 05:11 PM
The hunt continues for cats that are good quality and don't cost 1000 a piece like OEM
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Hofahome
02-23-2018, 05:24 PM
Not sure about aftermarket
But I'm in same boat ,I've seen p0420 And p0430
I want to confirm it's the cats breaking down and not just an exhaust leak first. Then I was going to hollow out "piggie pipes" oem cats if I find their bad.seems like a cheap alternative
Cat failures are common on 3.0t. Search in s4 forum or ask there for options.
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GilliamOS
02-23-2018, 05:28 PM
Wouldn't touch JHM cats with a 10 foot pole though...
Reason?
Reason?
They are known to fail. Hop on the B8 boards, much more information on the 3.0t than here.
GilliamOS
02-23-2018, 05:43 PM
They are known to fail. Hop on the B8 boards, much more information on the 3.0t than here.
Cool, thanks. I really liked the 034 HFC I had on my B5. It was perfect.
jtron
02-23-2018, 06:26 PM
It's not the 3.0T but I have the APR downpipe assenbly and it came with a high-flow cat. Now I know you said not $1,000 but do they make a system for you as well? Just hit the site and was actually shocked to only see the 4.0.
wwhan
02-23-2018, 06:29 PM
Well, if you wish to weld new cats into your pipes, these are similar to the cats used by AMS & APR
Vibrant Performance 7525 GESi High Output Catalytic Converter Rated for 350-500HP, Vibrant Performance 7525, Part Number: 231-7525 $393.25 (http://www.jegs.com/i/Vibrant-Performance/231/7525/10002/-1)
http://www.jegs.com/images/photos/200/231/231-7525.jpg