So I picked up a new quieter exhaust (Fujitsubo), but it has no O2 bung, since they don't need those in Japan. Is it ok if I just ziptie the sensor to the chassis? Will that cause a CEL?

I would get an O2 bung welded in, but since the exhaust is one piece I probably wouldn't be able to get it welded until after I've put it on my car (I don't have a car big enough to lug the exhaust around), so I'd probably drive around for a week with the O2 sensor out anyway.

Would it be ok to permanently keep the O2 sensor ziptied to the chassis?

 

You will throw a CEL code. It's mostly for emissions, so it's not a problem really, but why not just get a CEL eliminator and put it inline? Then no codes, and you don't need to leave it dangling down, where it will likely get ripped off one day.

Good luck!

 

yeah i dont think you should let it hang, you might loose it if you hit road debris. very bad and very expensive

 

just pop the grommet in the floor pan in front of passenger seat and pull it up into the interior.

 

Wow, didn't know there was a grommet in the floor pan. I'll have to take a look.

 

that's how the connector gets plugged into the harness. Next to console in front of passanger seat.

 

Timzcat is right, and no more problems after.

 

Hm, will I get a CEL if I pull it into the interior?

 

yes. If it doesn't see exhaust gases it will turn the light on.

 

Also, you'll mess up your 02 sensor from getting it knock around.

that o2 sensor aint cheap.