eMission: Fail (now pass- woohoo!)
#1
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Emissions time. Already got my extension which runs out next week.
Went to my dad's to reinstall my cat. Find out he recycled my cat for $20.![vash](https://www.miataturbo.net/images/smilies/vash.gif)
Pulled a cat off a stock 1.6 miata that was at the shop. Tried my damndest to make it fit. No chance.
Found a junk cat of unknown origin, removed the heatshield, and installed it around my test pipe. Convincing! Looked just like a cat. So I went to the testing station.
Results:
Reading Allowed
25/25
HC 143 160 pass
CO% .76 .90 pass
NOx 752 1179 pass
50/15
HC 149 166 pass
CO% 1.86 .93 FAIL
NOx 828 1304 pass
The tester says to me, "I think you need a new o2 sensor."
So I'll have to buy and install a cat.
Went to my dad's to reinstall my cat. Find out he recycled my cat for $20.
![vash](https://www.miataturbo.net/images/smilies/vash.gif)
Pulled a cat off a stock 1.6 miata that was at the shop. Tried my damndest to make it fit. No chance.
Found a junk cat of unknown origin, removed the heatshield, and installed it around my test pipe. Convincing! Looked just like a cat. So I went to the testing station.
Results:
Reading Allowed
25/25
HC 143 160 pass
CO% .76 .90 pass
NOx 752 1179 pass
50/15
HC 149 166 pass
CO% 1.86 .93 FAIL
NOx 828 1304 pass
The tester says to me, "I think you need a new o2 sensor."
So I'll have to buy and install a cat.
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#6
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Location: atlanta-ish
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Total Cats: 134
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This looks like a winner to me:
http://cgi.ebay.com/ebaymotors/Carso...spagenameZWDVW
Can I MIG steel flanges to stainless?
http://cgi.ebay.com/ebaymotors/Carso...spagenameZWDVW
Can I MIG steel flanges to stainless?
#8
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I dunno, MS says to lean the fuel in the manual here:
http://www.megamanual.com/v22manual/mtune.htm#emissions
But you're double the limit so I don't know if that would help enough to pass
http://www.megamanual.com/v22manual/mtune.htm#emissions
But you're double the limit so I don't know if that would help enough to pass
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#9
I identify as a bear.
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Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
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This looks like a winner to me:
http://cgi.ebay.com/ebaymotors/Carso...spagenameZWDVW
Can I MIG steel flanges to stainless?
http://cgi.ebay.com/ebaymotors/Carso...spagenameZWDVW
Can I MIG steel flanges to stainless?
94106 is a good cat. In fact, I believe that is the exact same one that I've got on my car (from Tony).
#10
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cool, thanks Joe. I saw some other generic 2.5" cats, but this one was an actual name brand. I submitted an offer of $52 shipped, and the seller accepted. ![Biggthumpup](https://www.miataturbo.net/images/smilies/biggthumpup.gif)
glad that MIG will work. the other welds in my exhaust are ugly as sin, so it will be right at home.
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glad that MIG will work. the other welds in my exhaust are ugly as sin, so it will be right at home.
#11
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Location: Central California
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Looks like requirements over here are a little bit more strict, here are the maximums that are listed on my last test for the '90:
15mph: HC=134ppm, CO=0.82%, NO=847ppm
25mph:HC=108ppm, CO=0.71%, NO=786ppm
last test was stock with 240k on the old engine and passed really well on CO, but had high NO. Next month im testing w/ new 3"cat, rebuilt motor, and megasquirt
should be no problem.
15mph: HC=134ppm, CO=0.82%, NO=847ppm
25mph:HC=108ppm, CO=0.71%, NO=786ppm
last test was stock with 240k on the old engine and passed really well on CO, but had high NO. Next month im testing w/ new 3"cat, rebuilt motor, and megasquirt
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#12
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Could you post a picture of your pseudo cat? I live in a location that only requires I have a cat in place, no test what so ever. I ran a test pipe, but got nailed and had to install a new cat to pass. I thought about gutting my present cat, but could not bring my self to destroying a brand new part. Camouflaging a “test pipe” sounds like a winner to me.
#16
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My dad's welder uses the 'big' spools, at $60 a pop.
I will have to find a kind volunteer with a welder, or pay a muffler shop or something.
Uhm, what if I get SS flanges? Can I MIG SS to SS? They're the same price as mild flanges, it looks like.