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Discussion Starter #1
If I get an exhaust cut out and dump it before the cat, will the o2 sensor still function on the cat or will it throw emmissions codes at me?

and how would it sound? I plan on getting the one that has the cable so you can open and shut it whenever.

and (stupid question) what size is the exhaust on a 2000 Blazer?
 

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Depends if it has a pre cat O2 sensor or not. Pre cat yes, after cat...no.
 

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It will sound really horrid and potentially throw a code depending on how many o2 sensors you have.
 
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