Ditch the rear cat ??

So my first thought was to get rid of the rear cat when I weld in the new muffler. But... I can't find any 2.75'' pipe.

So now I'm thinking about keeping the cat and splicing in the muffler

Or ditching the cat and just putting a turn down right after the muffler

 

If you delete the cat you must get a simulator o2..

 

The rear set of cats are passive, so you won't need a sim for them, but there isn't any reason to delete a set of cats if you aren't installing headers. What's likely to happen, taking a set out without doing headers, is the truck may lose some low end torque.

Also, doing a turn down after the muffler will most likely lead to a loss in low end tq. The tail pipe is needed to keep your low end.

Not very fun news, but better you know now.

 

I'll send you the perfect muffler for free, in trade for the rear cats.

The muffler that I send you will be legit, check out my site dirtydeedsindustries.com

 

I sent you a msg

 

I'll send you 4 cats for the perfect headers?!?!