Catalytic Converter

[WTF]

I have been thinking about hollowing out my cats. i have a 2002 silverado with a 5.3. i have a cat back flowmaster exhaust. i understand my check engine light will go on as soon as i doo this. what i want to know is how to make it go away and is it really as safe as i think it is. or should i insert a pipe through the center of the cat. any info may help.

[66nova]

I have been thinking about hollowing out my cats. i have a 2002 silverado with a 5.3. i have a cat back flowmaster exhaust. i understand my check engine light will go on as soon as i doo this. what i want to know is how to make it go away and is it really as safe as i think it is. or should i insert a pipe through the center of the cat. any info may help.

 

Why?

 

I hope you are not planning on gaining any power. But quite possibly lose it and lose fuel mileage.

[WTF]

I have been thinking about hollowing out my cats. i have a 2002 silverado with a 5.3. i have a cat back flowmaster exhaust. i understand my check engine light will go on as soon as i doo this. what i want to know is how to make it go away and is it really as safe as i think it is. or should i insert a pipe through the center of the cat. any info may help.

 

Why?

 

I hope you are not planning on gaining any power. But quite possibly lose it and lose fuel mileage.

 

 

 

 

 

 

I

[WTF]

I have been thinking about hollowing out my cats. i have a 2002 silverado with a 5.3. i have a cat back flowmaster exhaust. i understand my check engine light will go on as soon as i doo this. what i want to know is how to make it go away and is it really as safe as i think it is. or should i insert a pipe through the center of the cat. any info may help.

 

Why?

 

I hope you are not planning on gaining any power. But quite possibly lose it and lose fuel mileage.

 

 

 

 

 

 

I have

[WTF]

I have been thinking about hollowing out my cats. i have a 2002 silverado with a 5.3. i have a cat back flowmaster exhaust. i understand my check engine light will go on as soon as i doo this. what i want to know is how to make it go away and is it really as safe as i think it is. or should i insert a pipe through the center of the cat. any info may help.

 

Why?

 

I hope you are not planning on gaining any power. But quite possibly lose it and lose fuel mileage.

 

 

 

 

 

 

I have heard

[WTF]

I have been thinking about hollowing out my cats. i have a 2002 silverado with a 5.3. i have a cat back flowmaster exhaust. i understand my check engine light will go on as soon as i doo this. what i want to know is how to make it go away and is it really as safe as i think it is. or should i insert a pipe through the center of the cat. any info may help.

 

Why?

 

I hope you are not planning on gaining any power. But quite possibly lose it and lose fuel mileage.

 

 

 

 

 

 

I have heard that

[WTF]

I have been thinking about hollowing out my cats. i have a 2002 silverado with a 5.3. i have a cat back flowmaster exhaust. i understand my check engine light will go on as soon as i doo this. what i want to know is how to make it go away and is it really as safe as i think it is. or should i insert a pipe through the center of the cat. any info may help.

 

Why?

 

I hope you are not planning on gaining any power. But quite possibly lose it and lose fuel mileage.

 

 

 

 

 

 

I have heard that a

[WTF]

I have been thinking about hollowing out my cats. i have a 2002 silverado with a 5.3. i have a cat back flowmaster exhaust. i understand my check engine light will go on as soon as i doo this. what i want to know is how to make it go away and is it really as safe as i think it is. or should i insert a pipe through the center of the cat. any info may help.

 

Why?

 

I hope you are not planning on gaining any power. But quite possibly lose it and lose fuel mileage.

 

 

 

 

 

 

I have heard that a few

[WTF]

I have been thinking about hollowing out my cats. i have a 2002 silverado with a 5.3. i have a cat back flowmaster exhaust. i understand my check engine light will go on as soon as i doo this. what i want to know is how to make it go away and is it really as safe as i think it is. or should i insert a pipe through the center of the cat. any info may help.

 

Why?

 

I hope you are not planning on gaining any power. But quite possibly lose it and lose fuel mileage.

 

 

 

 

 

 

I have heard that a few times>

[georgerosen06]

lol a tuner can take off the codes for you. blackbear performance, wheatly, nelson performance etc. can all do it

[Draenor]

I have been thinking about hollowing out my cats. i have a 2002 silverado with a 5.3. i have a cat back flowmaster exhaust. i understand my check engine light will go on as soon as i doo this. what i want to know is how to make it go away and is it really as safe as i think it is. or should i insert a pipe through the center of the cat. any info may help.

 

Why?

 

I hope you are not planning on gaining any power. But quite possibly lose it and lose fuel mileage.

 

+1....The cats have very efficient flow rates.

[bubba33]

There is no real advantage to doing that,unless its clogged up which does happen. Though if thats the case it will run real bad no power. If its bad just replace it.

[BuckFeverZ]

You can either get a tuner/programmer or get o2 sims.

[Draenor]

You can either get a tuner/programmer or get o2 sims.

+1

[txab]

WTF would want to do that for? If you live in the US, you'd be making an illegal conversion. This was tried where I work on one the trucks I have to drive. Truck was not the same. It would throw codes sporadically even though they supposedly disabled the post cat sensors. It never ran like it used to. They installed new aftermarket cats and the truck performed as it should. One of the factors that made the higher-ups decide to put new cats in was that the truck was in for state inspection and they caught it when the rapped on the cats. Empty cats don't sound the same. If the vehicle had been in an area like nova66, it would've been busted when they stuck the sniffer up the pipe.