Best high flow catalytic that should pass emissions?
#1
Junior Member
Thread Starter
Join Date: Sep 2005
Location: The Golden Triangle, Ontario
Posts: 283
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Best high flow catalytic that should pass emissions?
Hey guys,
I have the greddy turbo with the 2.5 turbo tony DP and DP6061 2.5 exhaust.
The final step to getting the car on the road is getting a 2.5 cat and then passing emissions.
I am looking at the high flow spun cat's, either the metal or ceramic type.
Is one better than the other?
It seems like the ceramic ones are cheaper, any idea why?
Will passing emissions be an issue with either one of these cat's?
I will probably go with the ceramic type if it will be able to pass emissions in Ontario...
Thanks for the help
I have the greddy turbo with the 2.5 turbo tony DP and DP6061 2.5 exhaust.
The final step to getting the car on the road is getting a 2.5 cat and then passing emissions.
I am looking at the high flow spun cat's, either the metal or ceramic type.
Is one better than the other?
It seems like the ceramic ones are cheaper, any idea why?
Will passing emissions be an issue with either one of these cat's?
I will probably go with the ceramic type if it will be able to pass emissions in Ontario...
Thanks for the help
#3
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,339
Total Cats: 6,793
All else being equal, the spun metallic-core cats tend to have a lower cell-per-inch count (thus not doing quite as good a job at scrubbing the exhaust) but also a greater void ratio (more free space for gas to pass through) thus being slightly less restrictive. They also look cool.
#5
Hey guys,
I have the greddy turbo with the 2.5 turbo tony DP and DP6061 2.5 exhaust.
The final step to getting the car on the road is getting a 2.5 cat and then passing emissions.
I am looking at the high flow spun cat's, either the metal or ceramic type.
Is one better than the other?
It seems like the ceramic ones are cheaper, any idea why?
Will passing emissions be an issue with either one of these cat's?
I will probably go with the ceramic type if it will be able to pass emissions in Ontario...
Thanks for the help
I have the greddy turbo with the 2.5 turbo tony DP and DP6061 2.5 exhaust.
The final step to getting the car on the road is getting a 2.5 cat and then passing emissions.
I am looking at the high flow spun cat's, either the metal or ceramic type.
Is one better than the other?
It seems like the ceramic ones are cheaper, any idea why?
Will passing emissions be an issue with either one of these cat's?
I will probably go with the ceramic type if it will be able to pass emissions in Ontario...
Thanks for the help
Http://www.m-tuned.com
#10
Junior Member
Thread Starter
Join Date: Sep 2005
Location: The Golden Triangle, Ontario
Posts: 283
Total Cats: 0
Thanks guys,
I am leaning more towards the metal core cat'. it sounds like they are more durable.
Here is a decent link that i found while searching:
VWvortex Forums: Ceramic cat vs metal cat
I am leaning more towards the metal core cat'. it sounds like they are more durable.
Here is a decent link that i found while searching:
VWvortex Forums: Ceramic cat vs metal cat
#11
Elite Member
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Join Date: Feb 2008
Location: Birmingham Alabama
Posts: 7,930
Total Cats: 45
And why is it $900? Is it a special cat of some kind? Can find universal cats all day long for ~$300-$400.
#12
Elite Member
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Join Date: Jun 2007
Location: Overland Park, Kansas
Posts: 5,360
Total Cats: 43
Wouldn't it be cheaper to just move to a non emissions testing state? I was being sarcastic in the last post also if you didn't catch it. the day Alabama adopts emissions testing is the day I cry like a little girl.
And why is it $900? Is it a special cat of some kind? Can find universal cats all day long for ~$300-$400.
And why is it $900? Is it a special cat of some kind? Can find universal cats all day long for ~$300-$400.
The protege uses some gay *** converter pictured above. When I was shopping for a replacement part there were no aftermarket units I could find available and the dealer wanted an astonishingly large amount of money for one..
Instead I bought a Chinese POS stainless steel header off ebay for $99.00. It was a Pain in the *** to install and I'm sure will fail in a year, but thats why I have a welder. The car was getting very very poor mileage with the dead cat and now with the header and a "cold air" it gets 33mpg combined, did the Mitsu Evolution fix to trick the second o2 sensor and not trigger the MIL.
admittedly, eventually, one day, I'll have a cat on my Miata after I get the new motor installed, the Mazdaspeed6 however likely won't when I install an aftermarket downpipe. Those are twice the cost of the already over-priced pieces just to have a cat installed which makes no sense. A good quality 3" high flow metal core cat isn't but 150$ or so..
I'm not much of a believer that emissions equipment on vehicles really make that big of a difference. From what I've read the states which require emissions testing still have shitty air quality...
#13
Elite Member
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Join Date: Feb 2008
Location: Birmingham Alabama
Posts: 7,930
Total Cats: 45
May be rules against modification of exhaust systems, but why not weld on 2 standard flanges, and use a regular cat? I've seen a lot on not being able to modify stock systems, but I don't know if this could be classified somehow as a certified after market setup or something. I don't know, never dealt with any emission thank god.
I agree on the emissions stuff. Most of the places I have been with emissions testing have had worse quality than where I live now which doesn't. Of course thats comparing high population density areas with a more spread out city like Birmingham with only 250k people in the metro area. I can see how its a good idea, but doesn't really do much. Even a car with low emissions x 1 million cars in a small area = lots of smog. Last picture I saw of large California cities still showed **** loads of smog. Of course it would be worse with no emissions standards, but its still not pretty.
I agree on the emissions stuff. Most of the places I have been with emissions testing have had worse quality than where I live now which doesn't. Of course thats comparing high population density areas with a more spread out city like Birmingham with only 250k people in the metro area. I can see how its a good idea, but doesn't really do much. Even a car with low emissions x 1 million cars in a small area = lots of smog. Last picture I saw of large California cities still showed **** loads of smog. Of course it would be worse with no emissions standards, but its still not pretty.
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