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B1llyw
GenIII
 
4/23/2002
07:40:04
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 Subject: Removal of 3rd Cat - NOT
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Message:
I'm starting a new post on this so everyone sees this. Apparently others have cut off their 3rd cat, since the 02 sensors were before and after the pre-cats. More flow, better exhaust sound, no impact on air/fuel since you are not screwing with sensors. Guess what? My truck has an 02 sensor after the 3rd cat. Is that new in 2002? So, I guess I'll leave that 3rd cat (main cat) in place for now.
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CW
GenIII
4/23/2002
09:01:22
|  RE: Removal of 3rd Cat - NOT
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Message:
You could go to a high flow one.
2001 4.7 RC 5sp 3.92 LSD
Click on thumbnail for mods.
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R/Truck
Dodge Dakota
JOIN HERE
4/23/2002
11:06:01
| RE: Removal of 3rd Cat - NOT
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Message:
Get you an O2 simms box, it will take care of that problem.
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B1llyw
GenIII
4/23/2002
12:43:35
| RE: Removal of 3rd Cat - NOT
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Message:
I could go high flow or Kat Box but I was looking for something quick and dirty. Thanks.
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QUADMAN
GenIII
4/23/2002
12:48:47
| RE: Removal of 3rd Cat - NOT
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Message:
Thats something new on the 02. There is nothing after or before the 3rd kitty on an 01.
OPINIONS ARE LIKE....WELL, YOU KNOW THE REST!!
33X12.50 MTR's, Procomp Prerunner Lightbar, 33X12.50 MTR's, K&N Dropin, Flow 40 with duals, MANY MORE TO COME...
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PeTeR F.
Dodge Dakota
JOIN HERE
4/23/2002
13:23:56
|  RE: Removal of 3rd Cat - NOT
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Message:
Don't ask me why but on my 2000 4.7l I have an O2 after my cat. On the other hand I have no precats.
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QUADMAN
GenIII
4/23/2002
13:36:57
| RE: Removal of 3rd Cat - NOT
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Message:
Thats right, the 2000 got an 02 sensor with the one and only cat that they have. DC saw fit to give us 01 guys 3 cats but I guess they thought they would be nice and not give us any sensors on the main cat. Now I guess that they saw that they weren't being hard enough on us so the 02 guys get 3 cats with sensors on all 3. Gotta love those idiots up there! I wonder how many of those guys even drive our trucks or the high po cars dodge makes?
OPINIONS ARE LIKE....WELL, YOU KNOW THE REST!!
33X12.50 MTR's, Procomp Prerunner Lightbar, 33X12.50 MTR's, K&N Dropin, Flow 40 with duals, MANY MORE TO COME...
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fish-master
Dodge Dakota
JOIN HERE
4/25/2002
15:22:03
| RE: Removal of 3rd Cat - NOT
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Message:
Thinking of making a custom straight pipe and removing the 3rd cat. But I would make it a bolt on just in case I ever need to replace the original. Has anyone done this because I am just wondering if that would trigger the O2 sensor behind the cat and give me a check engine light. Thanks for any info.
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R/Truck
Dodge Dakota
JOIN HERE
4/25/2002
15:25:49
| RE: Removal of 3rd Cat - NOT
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Message:
Yep that will light up the old MIL. Get yourself a high flow cat (its like not having a cat) or spend the same amount on a 02 simms box.
Now this isn't true in all trucks, the 01 and ups don't have sensors on the third cat so its ok to do what you want. Just see if you have 02 sensors after the cat you want to remove.
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