i was curious about getting hi0flow cats. i have an 07 xlt 5.4. in addition i have true dual exhaust (x-pipe). is it worth getting them as far as sound and performance?

 

I asked this question as well, and was told by multiple people we already have high flow cats.

 

I have sent this link before. If your stock ones are bad, maybe change them.
But if it ain't broke, don't fix it.
http://www.fordf150.net/forums/viewtopic.php?t=60187

 

Who needs cats

 

Everyone. You dont want to screw up your O2 sensors.

 

do we really? i just wanna make my truck louder and i dont feel like dropping a grand on headers and i wanna keep it legal

 

care to elaborate?

 

I have em on my 4.6L. Big time sound difference over the stock ones. I think the newer years have 2 cats while mine had four. 2 in the front and 2 in the back. I removed them all and put 2 magnaflows on. Cost me $180 installed.

 

There are ways around that

 

i deleted my two rear cats and didnt even throw a code. and if you throw a code there is an easy fix to trick the 02 sensor. so how can you screw them up?