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      04-13-2017, 07:42 PM   #1
Cbozz
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Anyone running 300cpi high flowing cats?

So currently I have a catless AA x pipe setup but I also have a baby on the way and decided to get rid of the smelly ride so I'm thinking about installing high flowing cats but I had AA 100 or maybe that was 200 CPI cats and it smelled pretty bad alsmot made no difference when going catless...
My question is if anyone that uses 300 CPI or 400CPI could chime in and let me know which ones don't smell. I hope 300 gets rid of the smell completely but I'm not sure and searching forums I found a lot of discussion about HFC but never an answer which one really gets rid of the smell! Thanks guys!
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      04-13-2017, 10:19 PM   #2
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No one!???
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      04-13-2017, 10:35 PM   #3
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Well I'm curious too. The other thing I've seen is high load low cpi cats with extra rare earth minerals to aid in catalytic conversion of the exhaust. Also cat location is important I believe for heating up the elements
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      04-14-2017, 03:51 AM   #4
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Good on you for wanting to breathe clean air and making changes for your new family addition. I can't speak about 300 or 400 cell cats, but like you I was VERY concerned about odors, did LOTS of research and decided to go with the ESS X-pipe with HFC...I believe they use 200 cell but I can tell you that it does the trick and I'm very satisfied. Hope that helps!
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      04-14-2017, 07:38 AM   #5
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Quote:
Originally Posted by loveskiing View Post
Good on you for wanting to breathe clean air and making changes for your new family addition. I can't speak about 300 or 400 cell cats, but like you I was VERY concerned about odors, did LOTS of research and decided to go with the ESS X-pipe with HFC...I believe they use 200 cell but I can tell you that it does the trick and I'm very satisfied. Hope that helps!
Curious; are the HFC from ESS?
What tune are you using?
Any issues with passing OBDII readiness/smog test?
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      04-14-2017, 01:33 PM   #6
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Quote:
Originally Posted by TomHudson
Quote:
Originally Posted by loveskiing View Post
Good on you for wanting to breathe clean air and making changes for your new family addition. I can't speak about 300 or 400 cell cats, but like you I was VERY concerned about odors, did LOTS of research and decided to go with the ESS X-pipe with HFC...I believe they use 200 cell but I can tell you that it does the trick and I'm very satisfied. Hope that helps!
Curious; are the HFC from ESS?
What tune are you using?
Any issues with passing OBDII readiness/smog test?
Yes the HFC are from ESS but they came with the X-pipe, I didn't purchase them separately. The tune is also from ESS.
I just went thru Oregon's DEQ inspection, failed the first time and had to put back my original file, pass DEQ, and then reinstall the tune, et voila! Sure beats having to live with horrible odors all year, and/or needing to remove pipes and reinstall them each time I go thru state inspection.
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      04-14-2017, 02:10 PM   #7
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Quote:
Originally Posted by loveskiing View Post
Good on you for wanting to breathe clean air and making changes for your new family addition. I can't speak about 300 or 400 cell cats, but like you I was VERY concerned about odors, did LOTS of research and decided to go with the ESS X-pipe with HFC...I believe they use 200 cell but I can tell you that it does the trick and I'm very satisfied. Hope that helps!
I also have the ESS HFC Xpipe and am very happy. I don't know how many cells they have but there is no longer the telltale smell of catless cars

These cats are in the OEM position so they receive hotter air than the rest of the xpipes that have them further downstream. This helps the cats do their job

I can pass emissions all over the place as they all require 7 out of 8 sensors, so your secondary sensors can be unhappy but the car still passes.
I'm unsure of whether any state requires 8/8 sensors to pass. In MA, NY and CT I can pass emissions with any tune

Chris, if you're ever in NY you're welcome to try mine out

Last edited by SYT_Shadow; 04-14-2017 at 03:22 PM.
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      04-14-2017, 05:04 PM   #8
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Quote:
Originally Posted by SYT_Shadow View Post
I also have the ESS HFC Xpipe and am very happy. I don't know how many cells they have but there is no longer the telltale smell of catless cars

These cats are in the OEM position so they receive hotter air than the rest of the xpipes that have them further downstream. This helps the cats do their job

I can pass emissions all over the place as they all require 7 out of 8 sensors, so your secondary sensors can be unhappy but the car still passes.
I'm unsure of whether any state requires 8/8 sensors to pass. In MA, NY and CT I can pass emissions with any tune

Chris, if you're ever in NY you're welcome to try mine out
perfect, I think I got the answer I've been looking for! thanks guys!
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      04-14-2017, 06:08 PM   #9
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the afe hfc uses 300 cel cats, just fyi. i don't have mine yet, but when it arrives i can let you know more about it.
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      04-14-2017, 09:44 PM   #10
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Originally Posted by roastbeef View Post
the afe hfc uses 300 cel cats, just fyi. i don't have mine yet, but when it arrives i can let you know more about it.
that'd be awesome! thanks
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