cats or no cats
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2nd Gear
Joined: Mar 2011
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cats or no cats
i have a disco 1 with a faluty catalytic converter on one side can i just cut out the offending item and put streight pipe in its place but what do i have to do with the exuast sensors that are in the pipe
Recovery Vehicle
Joined: May 2009
Posts: 1,081
Likes: 1
From: Punta Gorda, FL
If I'm correct, there's only 1 o2 sensor per side? I would definitly leave it.
No ill effects otherwise from removing the cat, other than depending where you live, it will fail smog,or inspection, or whatever you're state calls it.
No ill effects otherwise from removing the cat, other than depending where you live, it will fail smog,or inspection, or whatever you're state calls it.
Three Wheeling
Joined: Jan 2011
Posts: 88
Likes: 1
Your left and right banks of o2 sensors and cats tell your engine how to fire your fuel injectors. It will have a negative impact on your already impressive fuel MPG. No sense polluting and actually breaking the law to avoid replacement parts.
Recovery Vehicle
Joined: May 2009
Posts: 1,081
Likes: 1
From: Punta Gorda, FL
Yea, I totally forgot to ask what year D1 it is? If it is pre-'96, you would be ok(other than legal issues), if it is '96 or later(OBD-2), you have 4-O2 sensors which reads pre- and post cat exhaust levels. Removing a cat in that case would pop you're check engine light constantly, and MIGHT affect fuel/drivibility
Super Moderator
Joined: Nov 2009
Posts: 5,847
Likes: 106
From: Arkansas
only the front o2 sensors will affect performance and MPG. (and like was said earlier, the 94 and 95 only have front sensors). Removing that cat, especially if it is bad, would actually improve MPG, not reduce. On a 96 and newer, it will cause the light to come on which is annoying. I had the cat replaced on my 96, because I like to know when a NEW problem starts.
Last edited by jafir; Mar 28, 2011 at 01:08 PM.
4wd High
Joined: Mar 2011
Posts: 9
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From: Orange County
I have a related question. I've got a 96 Discovery, but so far everything that I have looked at makes this vehicle look like a 95. It was made in early 96, february or march if I recall.
Is there any distinguishable differences between the 95 and 96 to tell if mine is more like a 95 than a 96?
I ask because I too was thinking of removing my cats.
Is there any distinguishable differences between the 95 and 96 to tell if mine is more like a 95 than a 96?
I ask because I too was thinking of removing my cats.
TReK
Joined: Sep 2010
Posts: 2,073
Likes: 6
From: Ketchikan, Alaska, USA
I have a related question. I've got a 96 Discovery, but so far everything that I have looked at makes this vehicle look like a 95. It was made in early 96, february or march if I recall.
Is there any distinguishable differences between the 95 and 96 to tell if mine is more like a 95 than a 96?
I ask because I too was thinking of removing my cats.
Is there any distinguishable differences between the 95 and 96 to tell if mine is more like a 95 than a 96?
I ask because I too was thinking of removing my cats.
Super Moderator
Joined: Nov 2009
Posts: 5,847
Likes: 106
From: Arkansas
Exactly. A 94-95 will have 3.9L on the intake, and will have a distributor. The 96+ will have 4.0L on the intake and coil packs.
All of the 96+ have driver and passenger airbags.
Most importantly the 10th digit of the VIN of a 1995 will be S and a 1996 will be T (this is for ALL US market cars)
All of the 96+ have driver and passenger airbags.
Most importantly the 10th digit of the VIN of a 1995 will be S and a 1996 will be T (this is for ALL US market cars)
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