i might sound like an idiot, but does the 1992 f-150 5.8 efi have 1 or 2 cats. i bought the truck with it dualed out and i thought the 2nd muffler/cat was a muffler, but after reading in here i'm not so sure. any help would be apreciated

 

I am not sure if its the same as other models, but I believe there are two units on the Y pipe, correct? That is actually a two piece cat. It is a precat, and then the actual cat. They do the work of one single catalytic convertor.


Rich

 

ok. well i feel like an idiot, i replaced the 2nd cat with a 40 series flowmaster. would i get any better performance cutting out the muffler or the other cat? and if i cut out the 1st cat how would i connect the pipes as it is a dual inlet cat?

 

To get the best, legal horsepower, as well as keep future generations to come with cleaner air, you should run a high flow catalytic convertor. Is it true duals (from each engine bank back) or duals behind the muffler? Do you have youre check engine light on?


Rich

 

its duals behind the muffler and my check engine light isn't on

 

I'd just replace the front pre-cat with a Catco dual-inlet catalytic converter. Should cost you no more than $100.

 

Yup, Im with AKFORD351 on this one.


Rich