does the o2 sensor still go in the middle of the cat on an aftermarket highflow cat? can it go behind it on the exhaust side or will that throw a code? thanks

 

Yes. and Yes - you will be cleaner with your downstream after the cat than in the middle. A lot of people leave the ds o2 sensor siptied somewhere under there, s othe ecu thinks the car is running very clean, but I don't know if you would have any issues due to this, I would say your idea is safe, but I am not an expert, and don't do any emissions testing, so maybe someone in anactual garage ought to chime in here.

 

You have a stage 1 according to you sig. If this is the case, the ds O2 senser is deactivated. You can run without a cat and still not throw a code.

Hey Post, are you coming to the Newark De meet on the 27th? sorry to hijack

 

thats cool then ill just zip tie it somewhere

 

Id place it in the middle of the cat if I were you.

 

Good call - didn't notice the s1.

Didn't notice that there was one - I might. Fridays are tough though - what are the details - Pm me.

Sorry 05srt4, back to the topic.

 

so post you are concurring that the 02 sensor is now inactive and not necessary.