Exhaust Size after the 4th Catalytic Converter
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Originally Posted by rwenzing
2003 4.0 has the CMS O2 sensor in the short pipe between the 3rd and 4th cat.
Hmmmm, I have a 03 FX4 and I do not that I have one there. I'll have to look, it gives me a reason to get away from my desk.
edit: damn, it's there.
Last edited by DerangedPony; 07-17-2007 at 01:14 PM.
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Originally Posted by HighRollerII
4th cat..
heck i just thought i had one..lol where the other 3 at?
heck i just thought i had one..lol where the other 3 at?
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Originally Posted by Lord Of War
What are the pros and cons of removing the 4th cat. Mostly interesed in the cons. Dont want to mess anything up.
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Originally Posted by DerangedPony
I dont see why there would be any Cons. Basically, you will have the same set-up of a 2004-up truck after you remove the 4th cat? The o2 is before the 4th cat so I see no reason why it would not pass emissions.
Ford felt generous and gave the 01-03 guys and extra incase the others failed