Ceramic Cat vs. 100 cell Metal Substrate Cat
Mar 5, 2008, 04:11 PM
#1
Ceramic Cat vs. 100 cell Metal Substrate Cat
So, have another cat comparison! 
Had a Evo owner come in today for a retune because he was swapping his Works ceramic cat to a 100 cell Metal Substrate Cat.
I've tuned a couple cars already with the 100 cell and have been impressed as they make pretty good power.
Today's comparison was a good confirmation for me.
Dotted lines are with the ceramic cat, solid lines are with the 100 cell Metal Substrate high flow cat:
+14whp / +14wtq peak gains Plus large gains in spool up and gains in every point of the power curve. Very nice!
Here is the boost plot between the two.
Dotted lines are with the ceramic cat, solid lines are with the 100 cell Metal Substrate high flow cat:
I tuned in approx the same amount of boost at peak torque, through the midrange, and the 100 cell allowed more boost up top, 6500 to 7000 rpm. Before on the ceramic cat, the boost was maxed out at 100%. So the 100 cell cat did relieve a good amount of back pressure from the system. As you can see in the chart, this helped with spool and sustaining more boost up top.
This was a Evo 8 with a TME turbo and works cams.
Had a Evo owner come in today for a retune because he was swapping his Works ceramic cat to a 100 cell Metal Substrate Cat.
I've tuned a couple cars already with the 100 cell and have been impressed as they make pretty good power.
Today's comparison was a good confirmation for me.
Dotted lines are with the ceramic cat, solid lines are with the 100 cell Metal Substrate high flow cat:
+14whp / +14wtq peak gains Plus large gains in spool up and gains in every point of the power curve. Very nice!
Here is the boost plot between the two.
Dotted lines are with the ceramic cat, solid lines are with the 100 cell Metal Substrate high flow cat:
I tuned in approx the same amount of boost at peak torque, through the midrange, and the 100 cell allowed more boost up top, 6500 to 7000 rpm. Before on the ceramic cat, the boost was maxed out at 100%. So the 100 cell cat did relieve a good amount of back pressure from the system. As you can see in the chart, this helped with spool and sustaining more boost up top.
This was a Evo 8 with a TME turbo and works cams.
Mar 5, 2008, 04:15 PM
#2
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How efficient do you think the 100 cell cats are on the emissions side of the equation. I realize that they make less back pressure than higher cell cats and are better than a test pipe in terms of emissions. What does your nose tell you?
Again you are providing some really great info. We love it.
Again you are providing some really great info. We love it.
Mar 5, 2008, 05:21 PM
#4
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I don't know how our emission tests in the UK compare to those in the US, but my 100 cel gets through our yearly test with no problems, the tester said it was way inside the limits.
MB
MB
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Mar 5, 2008, 06:42 PM
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Mar 5, 2008, 06:43 PM
#9
100 Cell MIL.SPEC Race Cat FTMFW 
As to emissions, I can't make any promises. We are also in the process of getting aquiring some 200 cell cats that have EPA certification in 48 states. They'll flow less, but they should meet emissions standards (baring some really aggressive cams, etc).
Once in awhile when I'm logging my car I throw a CEL (Normally I have a CReader in my OBD2 port). Nothing a simple mechanical CEL fix won't solve. If I understand the PGM coatings used on the 200 cell, CEL's shouldn't be a problem.
PM me for any questions.
As to emissions, I can't make any promises. We are also in the process of getting aquiring some 200 cell cats that have EPA certification in 48 states. They'll flow less, but they should meet emissions standards (baring some really aggressive cams, etc).
Once in awhile when I'm logging my car I throw a CEL (Normally I have a CReader in my OBD2 port). Nothing a simple mechanical CEL fix won't solve. If I understand the PGM coatings used on the 200 cell, CEL's shouldn't be a problem.
PM me for any questions.
Last edited by Erik@MIL.SPEC; Mar 7, 2008 at 06:13 PM.
Mar 6, 2008, 06:24 AM
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I saw that he used to just sell the cat without flanges before. Don't know if this would continue.
I bet that if someone would sell a bolt on 100 cell cat they could make some $$$$$s.
I bet that if someone would sell a bolt on 100 cell cat they could make some $$$$$s.
