cat removal

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I was thinkin of punchin out the cats on my 3fe but was wonderin if it will affect the computer or anything? no need for smogin my 62.
 

yooper

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The oxygen sensors are in the pipes ahead of the cats, so punching them out will have no effect on the ECU. If your cats are old and clogged up, like they tend to be, you'll get a small power boost. I chose to replace my cats with a single free-flowing one from CatCo - no reason to pollute just for the hell of it, and a cat is one of the few things that actually makes your exhaust cleaner. Just MHO.
 
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yo, yooper did you remove the outboard cat and place the new single inside the frame rails? If so how did you deal with the O2 sensor on the outboard. Got any pics? :D
 

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