Catless Exhaust
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4wd Low
Joined: Jun 2022
Posts: 11
Likes: 0
From: Germany
Catless Exhaust
Hey everybody!
This truck currently has the stock exhaust with the stock exit location, for the exception of the muffler which has been deleted and replaced with a piece of straight pipe.
My question is, how would one go about removing the catalytic converters but keeping the downstream O2 sensor intact? (it has the 4.6 3v with only 2 cats in total)
I’ve been told that the downstream sensors aren’t required for the truck to run, but it will still run too rich.
So with that being said, 2 questions:
1. What is your experience with removing the cats (and the downstream O2 sensors if applicable)
2. If the cats were replaced with straight pipe, would an O2 bung still work for the downstream sensor, OR should I just get a tune to lean it back out to stoich?
Thanks in advance for your help!!
This truck currently has the stock exhaust with the stock exit location, for the exception of the muffler which has been deleted and replaced with a piece of straight pipe.
My question is, how would one go about removing the catalytic converters but keeping the downstream O2 sensor intact? (it has the 4.6 3v with only 2 cats in total)
I’ve been told that the downstream sensors aren’t required for the truck to run, but it will still run too rich.
So with that being said, 2 questions:
1. What is your experience with removing the cats (and the downstream O2 sensors if applicable)
2. If the cats were replaced with straight pipe, would an O2 bung still work for the downstream sensor, OR should I just get a tune to lean it back out to stoich?
Thanks in advance for your help!!
Lead Driver
Joined: Nov 2020
Posts: 7,128
Likes: 1,945
From: Sportsman's Paradise
Hey everybody!
This truck currently has the stock exhaust with the stock exit location, for the exception of the muffler which has been deleted and replaced with a piece of straight pipe.
My question is, how would one go about removing the catalytic converters but keeping the downstream O2 sensor intact? (it has the 4.6 3v with only 2 cats in total)
I’ve been told that the downstream sensors aren’t required for the truck to run, but it will still run too rich.
So with that being said, 2 questions:
1. What is your experience with removing the cats (and the downstream O2 sensors if applicable)
2. If the cats were replaced with straight pipe, would an O2 bung still work for the downstream sensor, OR should I just get a tune to lean it back out to stoich?
Thanks in advance for your help!!
This truck currently has the stock exhaust with the stock exit location, for the exception of the muffler which has been deleted and replaced with a piece of straight pipe.
My question is, how would one go about removing the catalytic converters but keeping the downstream O2 sensor intact? (it has the 4.6 3v with only 2 cats in total)
I’ve been told that the downstream sensors aren’t required for the truck to run, but it will still run too rich.
So with that being said, 2 questions:
1. What is your experience with removing the cats (and the downstream O2 sensors if applicable)
2. If the cats were replaced with straight pipe, would an O2 bung still work for the downstream sensor, OR should I just get a tune to lean it back out to stoich?
Thanks in advance for your help!!
If the truck is running rich you need to look elsewhere for the cause.
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