Hey, I am planning on ordering a full Hanh Exhaust set-up and I am just wondering if you need the factory header O2 sensor. I don't know if Hanh has the option of an extra O2 bung for an AFR gauge (waiting on e-mail) but can I just leave out the factory O2 sensor in the header and fill it with an after market AFR sensor? The sensor after the CAT needs to stay, and a person can't read the AFR after the cat right?

Thanks

Bump Bump

 

yes the o2 sensor on the header is the only important one.. u mess with it and ull screw ur afr all up. leave it there and cut off ur cat put the wide band in the o2 bung where the after cat one went..its just there to check emiission and crap. ull get a cel if u dont have it turned off in a tune but it will not hurt anything.

 

You can remove the 2nd o2.. but that is NO WHERE NEAR where your wideband should be...

 

Kinda what I was figuring. Thanks boys!