cat converter

[alabamachevy15]

can you take a cat converter off 03 4.8?

[ridnlow]

yes.. just need to get the rear 02's deleted in your tune or get 02 sims..if you dont you will have a service engine soon light..

[alabamachevy15]

from what ive heard the truck will not even run right with them off. cause when i got my straight pipes i told them to take them off but he said it would not run right.

[DBYRD]

get a tune, then u can do almost anything u want with it.

[alabamachevy15]

could i take the out w/ a superchips programmer or any other kind?

[06BLACKMAX]

<div class='quotetop'>QUOTE(alabamachevy15 &#064; Apr 23 2007, 08&#58;49 PM) [snapback]91126[/snapback]</div>

could i take the out w/ a superchips programmer or any other kind?
[/b]

No you need to have the o2 sensors deleted from your ecm, a "custom tune".
Allen Nelson is the shit from what i have been told.
www.nelsonperformance.com
He deleted the cats from a buddy of mine&#39;s truck with a custom tune "2500hd6.0" and it runs like a scalded ape&#33;&#33;&#33;

[skeet]

you can only delete the rear o2 sensors from what i understand the first ( close to the engine) can not be deleted as the engine needs these 2 to run..

[06BLACKMAX]

<div class='quotetop'>QUOTE(skeet &#064; Apr 23 2007, 09&#58;49 PM) [snapback]91140[/snapback]</div>

you can only delete the rear o2 sensors from what i understand the first ( close to the engine) can not be deleted as the engine needs these 2 to run..
[/b]

That is correct, the front two help monitor the air/fuel mixture.

[alabamachevy15]

thanks for the info yall i will probally be looking into that.

[ridnlow]

yea whoever told you the truck wont run without cats is full of it.. just leave the front 02 sensors as is and let is roll..