new to fords
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Junior Member
Joined: Jun 2009
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new to fords
97 f150 5.4 i got a hole in the front cat on the drivers side can i cut just the one out and put a pice of pipe in or should i cut all of them out and are there really 4 cats on this truck
Senior Member
Joined: Mar 2008
Posts: 255
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From: Columbia, MO
Yes there really are 4 cats on them, its a Ford thing. lol. If I were you I would replace all 4 with two high flow cats... Although, I just gutted both mine a few weeks ago. I got a video in my sig.
If the rears are still inplace no, his rear O2s are mounted after the cats im pretty sure, and the rear cats contain more catalyst than the pre-cats do. Should be good to go if he can find someone to do the work.