3rd cat void warranty

[joshc64311]

anyone with the 3rd cat removed run into power/drive train warranty problems?

[07Softail]

Will not hurt anything it's not monitored.

 

RT

[Willshire]

I'm sure this will be a stupid question but why are you guys removing the cats? I don't see them as flow restrictors. Sound? They pay $60 each at the scrap dealer? I am curious

[07Softail]

Third cats are not monitored by any sensors so they are dead weight and slow exhaust flow a bit. Maybe sound is increased a little but i didn't notice any when i removed mine.

 

RT

[joshc64311]

so the dealer gave no BS over it?

[07Softail]

Nope... but I have a pretty good service dept manager. I talked him into installing catch cans on his Vette, Camaro and Truck.

 

RT

[sahls01gmc]

I got rid of my only cat...life is much better now. The dog sleeps better at night and the kids don't get random scratches anymore either. I highly recommend this mod for anyone with cats.

[joshc64311]

what size pip is it? 2.75 or 3 for the 5.3

[07Softail]

Third cat pipe size is 3.5" inlet to 3" outlet for 5.3

 

RT

[Txjose]

Cut it off..... Void all the warranties!!!!

[txmuder]

Had mine removed on my 2012 truck and never a warranty issue except possibly an exhaust warranty if I had ever had one (NO), I took it in and had 4 motor mounts replaced under warranty, took it in at 87K+ miles and had a complete rebuild done on my transmission covered under warranty. Never had any other problems other than a shock was leaking and they also replaced it under warranty.

 

I had a programmer installed, true dual exhaust without 3rd cat and resonator and never a warranty issue. I am not saying its not possible just not on my end so far. I did not have my new trucks cat removed but I also have not had it true dueled yet either.

[Tong Lu]

Took mine out last week, I already had a straight pipe after the 3rd cat, found out it wasn't monitored. The exhaust got louder and deeper, quite happy with it. Now, anyone want to buy a 3rd useless cat for their truck?

[leestopher187]

What size pipe do you put in to take out the 3rd cat? Wanna do this but I gotta make sure I have the right size exhaust.

 

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[07Softail]

Read the Thread!! Post #9!!!!

 

RT

[gabekalp]

What happens if you cut off the 3rd cat and drove with it just like that?

 

 

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