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Discussion Starter #1 (Edited)
i looked under the car ( and i am looking for a place for cutouts) so which are the resonators and wich are the cats? is the cats right after the headers? should install them after the headers or after resonators or after cats???
and should i install them before or after the O2 sensors?
thanx alot
 

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13 year owner
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Yes, cats are as close to the engine as possible to promote efficient "light off" of the catalyst. Anotherwords, heating up.
 

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May I quote you on that?
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22,046 Posts
Exhaust is over 2000 F exiting the cat. Back in 75, before anyone knew much about cats, a mechanic buddy had a car with a bad miss. The unburned fuel got going in the cat, which began to glow. He noticed it from the smell of burning carpeting. Took several minutes with a hose to cool it down.
 
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