Is anyone here very knowledgeable....

Resonators should be completely round, cats are either flat and wide or more of a square. What are you even trying to ask? Because you keep bumping but you never even asked a straight up question, just "knowledge about cats and o2 sensors"... Which is almost endless.

 
Did you look at the link I posted? The front cat actually kind of looks like a waffle because of the top view given in the pic. So which one would be the "scrubber"
Honestly, no I didnt look. I still havent. But if its merely a resonator, that is simply a pipe of a certain diameter, length, and shape (think port), which should not be considered a catalytic converter.
 
Honestly im mindlessly bored at work about 90% of the time. I spend about half my time here and the other half on racingjunk.com //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif
Hey, no need to be bored ... Get to makin' some more of your bass re-mixes. That Thriller one makes my sub do things it's probably not supposed to!

 
Buck, You can contact someone like Steeda or American Muscle and ask about the MIL eliminators for the after cat O2 sensors. I'm pretty sure that 4.6L in your truck is similar if not the same as in the mustangs.

I think all four are catalytic converters with the honeycomb in it.

 
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Buck

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