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Hey guys where is the O2 sensor for a 5th gen. I wanna buy a test pipe and they some come with holes for the )2 sensor if its originally in the cat. So im not sure to buy one with the hole or without.
 

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5g have two o2 sensors: first one is located on the downpipe of the header (after the flex pipe before it connects to the front of the cat), the second o2 sensor is located at the end of the cat (on the cat).

so if you're looking into testpipes (ebay one?) or highflow cat, then you should look for the ones with an O2 bung at the end of the pipe/cat.

Hope you're understanding my description.
 

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reactive, just another common brand with hype about their products, but i could be wrong..where do you live? does your state care about emission? if get a testpipe, then your car gonna throw check engine light and you need to do an ODBII to OBDI conversion.

but if you're into high flow cat, invest in carsound cat. something i'm gonna have really soon now.
 
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