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Cueball
Dodge Dakota
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3/09/2002
20:53:53
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 Subject: catalytic converter
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Has anybody heard of "performance catalytic converters"? A guy at a performance store was trying to sell me one and said "that they were great, but the engine light will always be on". Sounds fishy to me. Thanks.
Cueball
V-8 4.7
Ravin Exhaust
K&N Generation II Air Intake
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CW
GenIII
3/09/2002
21:00:12
|  RE: catalytic converter
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If yours is a 2000 4.7 they really like the high flow cats. Doubt the check engine light will be on if the cat is doing its job.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm TB, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat, Electric fan Convertion, HO cams.
Working on adjustable fuel pressure with return.
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Cueball
Dodge Dakota
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3/09/2002
21:03:43
|  RE: catalytic converter
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Sorry about that, I have a 2001. Thanks for the info though!
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TigerDak
Dodge Dakota
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3/09/2002
21:13:23
| RE: catalytic converter
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Message:
From my experience in dealing with cats, as soon as the sensor goes off that senses a change in factory emissions, that light will come on. That guy was probably right. That light is supposed to come one once in a long while, and it usually just means to have your emissions connections checked for servicing at the dealership. Its just another way to get you, your money, and your precious hard working truck into the shop (again) for some servicing. It doesnt necessarily mean that anything is wrong. The light can be reset by a competent mechanic and it will turn off.
When I cut out my cat, that light came on because it sensed a change to the emissions in my truck. The next time I had my truck's fuel injectors cleaned out, the mechanic offered to turn off that light for me. Took about 60 seconds.
Performace cats are nice because they are free flowing (if there is such a thing!) more than OEM cats. Nicer performance, mpg's, hp's, etc. But should also have a higher flowing muffler, headers, custom pipes, etc. If you plan on getting a complete upgrade exhaust system, I would hold out and get it all done at the same time, rather than piece by piece.
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Cueball
Dodge Dakota
JOIN HERE
3/09/2002
21:15:59
| RE: catalytic converter
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Message:
Thanks for the info! Where is the best place to get these cats? Thanks!
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R/Truck
Dodge Dakota
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3/11/2002
11:11:56
| RE: catalytic converter
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Don't mess with your cats, there are other things that will make your truck go faster. It should be one of the last things you do, unless you have a lot of money available to play with. Besides that stock cat has a 8 year warranty.
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Todd Bouton
Dodge Dakota
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3/11/2002
11:29:29
| RE: catalytic converter
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CW-
did removing your third cat trip a MIL light on yours? I'm getting real close to omitting mine also.
Thanks for your reply,
Todd
01-4.7 QC 5spd LSd, hombrew intake, 180, AIT adj., MObil 1
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MikeD
Dodge Dakota
JOIN HERE
3/11/2002
11:40:18
| RE: catalytic converter
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I got rid of my 3rd cat and noticed alot of considerable gain, plus is sounds a hell of a lot better too. No lights goin off on mine, guess I got lucky.
~Mike~
'01 RC R/T
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CW
GenIII
3/11/2002
14:39:26
| RE: catalytic converter
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No check engine because they don't monitor the third cat in the main pipe. It is sitting in my back yard. I just go the muffler guy to take it out and put in a new pipe. Works wonders for the sound and better power to boot.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm TB, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat, Electric fan Convertion, HO cams.
Working on adjustable fuel pressure with return.
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ICEMAN
Dodge Dakota
JOIN HERE
3/12/2002
21:07:47
| RE: catalytic converter
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Message:
For those of you who want to omit the cat,try this little trick! On the after cat(back ones)oxygen sensors,leave them out of the pipes plug the hole and wrap the o2 sensors in aluminum foil and tie them to the inside of the frame.it worked on mine,and i have never seen the check engine light!!!!!
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CW
GenIII
3/12/2002
22:35:31
| RE: catalytic converter
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Message:
May not see a check engine light but if it doesn't see a propor voltage then it tries to compensate. That usualy means a rougher idle and poorer fuel milage.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm TB, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat, Electric fan Convertion, HO cams.
Working on adjustable fuel pressure with return.
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corey
Dodge Dakota
JOIN HERE
12/03/2005
15:18:54
|  RE: catalytic converter
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Message:
i want a high flow cat where can i find one online for my 4.7
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stevedak
Dodge Dakota
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12/03/2005
15:45:44
| RE: catalytic converter
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i heard that with a high flow cat u loose low end torque. Is this true?
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OBIO3
Dodge Dakota
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12/03/2005
15:55:37
| RE: catalytic converter
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Message:
Buying a high flow after market cat isn't a problem > Buying one that is not DOT approved is > Just be carefull which company you buy from > I'd be surprised if any company could legally built a non conformng cat My opinion > so mamy problems > So little time
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Spacinjason
Dodge Dakota
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12/05/2005
11:51:29
| RE: catalytic converter
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Message:
Hey Mike D. and CW I have a question. When you had the third cat removed, was there any wiring you had to deal with? That sounds like something I might be interested in doing to my '01 QC. Would probably compliment my exhaust system nicely! Also, do you have any emission tests where you live? Did it affect your emissions at all?
Thanks in advance for any response!
Spacinjason
'01 QC Sport 4x4
4.7L, 5 sp., 3.55 LSD
Magnaflow exhaust
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Bob Lincoln
Dodge Dakota
JOIN HERE
12/06/2005
10:40:21
| RE: catalytic converter
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Message:
"That sounds like something I might be interested in doing to my '01 QC. Would probably compliment my exhaust system nicely! Also, do you have any emission tests where you live? Did it affect your emissions at all?"
Regardless of whether you have emissions testing, it is a federal felony to remove or disable any emissions device, punishable by a $2,500 fine. Just so you know what you're doing.
It will raise emissions.
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Spacinjason
Dodge Dakota
JOIN HERE
12/06/2005
11:25:58
| RE: catalytic converter
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Message:
Thanks for the response BOB, that was why I had asked those questions! I want to keep my truck legal, and was not sure if removing the third cat would be illegal as the truck still has two other cats on it.
Again, thank you so much for setting me straight.
Spacinjason
'01 QC Sport 4x4
4.7L, 5 sp., 3.55 LSD
Magnaflow exhaust (w/ 3 cats)
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Fed
GenII
12/06/2005
12:07:17
| RE: catalytic converter
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Message:
it's only illegal once you get caught
and you'd have to try to have a police officer to get down on his
knees and look under your truck...
haha
'93 Dakota CC 3.9 auto
(4.10, limited slip, exhaust, intake, lowered)
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Bob Lincoln
Dodge Dakota
JOIN HERE
12/06/2005
13:09:17
| RE: catalytic converter
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Unless his state adopts emissions testing, or he sells it to someone who lives where they test... in that case, he'd be responsible for paying to make it legal at the very least...
haha yourself
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haha
Dodge Dakota
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12/06/2005
13:19:52
| RE: catalytic converter
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lookout... its the emmisions nazi.
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Spacinjason
Dodge Dakota
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12/06/2005
14:14:43
| RE: catalytic converter
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I guess a person could take out the third cat, hollow it out and put it back in so that it looks like the third cat is still in place and functional!
Thanks again BOB.
Spacinjason
'01 QC Sport 4x4
4.7L,5 sp., 3.55 LSD
Magnaflow exhaust
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