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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

remove the cats?

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Old 04-06-2012, 03:56 AM
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u'll wont regreat doing a rear cat delete
Old 04-06-2012, 05:02 AM
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I wonder if some body has already taken mine off because my truck only.has two cats on it now.there round in shape and not.ovle like the ones that have been posted already.there is also just two 02 sensers and there both up stream from my cats no down stream sensers.my truck is a 07 if that makes a difference.
Old 04-06-2012, 05:11 AM
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Originally Posted by caleb90
I wonder if some body has already taken mine off because my truck only.has two cats on it now.there round in shape and not.ovle like the ones that have been posted already.there is also just two 02 sensers and there both up stream from my cats no down stream sensers.my truck is a 07 if that makes a difference.
07/08 only have 2 cats.
Old 04-06-2012, 05:32 AM
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There are 2 O2 sensors near the exhaust manifold and 2 O2 sensors on top of the cats. You'll need to keep the downstream O2 sensors for it to run properly.
Old 04-06-2012, 06:14 AM
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Originally Posted by techrep
Removing the cats is Illegal in all 50 states...I doubt the muffler shop will do this for you.
X2 if a shop does cut the cats off it's a fine to you and the shop of 40,000$ each so I was told.
Old 04-06-2012, 07:43 AM
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Originally Posted by caleb90
I wonder if some body has already taken mine off because my truck only.has two cats on it now.there round in shape and not.ovle like the ones that have been posted already.there is also just two 02 sensers and there both up stream from my cats no down stream sensers.my truck is a 07 if that makes a difference.
Your 07 came with two cats. The O2 sensors that monitor catalytic function are mounted on the cat. As other's have said, removing these is illegal and will cause a CEL. What you can do is swap the two stock cats for two high flow cats and there will be an increase in sound and stay legal.
Old 04-07-2012, 11:22 PM
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here in ky we dont have any inspections,i live in a town of rednecks n straight pipes everwere



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