I have a 1992 ford f250 with a 460. I want to do a dual exhaust on the truck. It has the 2 in, 1 out cat on it. I would like to do a separate cat
and muffler on each side, But what do i do about the air tubes coming off the cat? There is 2 tubes on it. I'm guessing 1 is supply from the pump and the other is return to the pump. Thanks for any ideas. Happy holidays!

 

i took mine out an took out the egr.

 

I wish i could do that here, but it won't pass a visual inspection. Thanks for the reply anyway.

 

Both lines supply air to the cats. You wouldn't want exhaust going to the air pump. I don't know what the laws are in your state... you might have to hook up lines to both cats although my understanding is newer cats don't need air anyway.