couldnt find anything when i last looked if you need to have custom tunes made if you take out your two rear cats... i have it set up so there are no codes i am strictly talking for proper running circumstances... i removed mine and seem to have problems come up after taking them out but cant be sure that is why or not..

 

how did you set yours up im throwing codes

 

You shouldn't have any problems with just removing the rear cats. In you sig, it says your trucks a 2008, you should only have 2 cats to begin with. 04-05 had the 4-cat system, after that they changed to just using 2 cats.

 

Yes that is correct, it has 4 o2's and two cats. Okay well if it shouldnt have problems then its gotta be other stuff i had in mind.. Thanks