My truck is in the shop today getting some exhaust work done. Now, I haven't actually crawled under it to look at it myself, but when I checked with the local dealership they told me my truck has 4 cats on it. The guy from the exhaust shop just called me and told me it only has 2. Is it possible that a 2006 5.4L would only have 2 cats or is he just not seeing the front 2?

 

Late 2005 up until present only have 2 cats.

 

Grrrrrr... the service department at my local dealer specifically told me 4. Anyone know of a good place to get o2 sensor extension cables? The shop told me that they would have to relocate the o2 sensors after the cats and teh stock cables aren't long enough.

 

Jan 2005+ all have only two. For 8 years they had four, thats why the idiot at the dealership counter guessed instead of actually looking it up.

And if your shop knew what they were doing, they would move the new cats up as far as possible, and there would not be any need for O2 extensions. Just a simple drill in the pipes after cats and bung them.

 

My 06 5.4 has two only

 

I added high flow cat's, didn't use o2, I shut off o2 with my SCT X3.

 

Mine is an 06 and it has none...