I just got an exhaust with an o2 sensor hole, thing is i already installed an o2 sensor eliminator so my FI light stays off, i dont see any point in getting a real o2 sensor now.

but anyways i was wonder if anyone has plugged the o2 sensor hole so all the exhaust fumes come out the back and not thru the little o2 sensor hole and what size would the bolt be?

and would it make any difference if i dont plug it? it might be a mental thing but i would feel better if all the exhaust fumes came out the tail end.

thanks any replies appreciated.

 

It'd only change the pressure in theory. But I'd measure it and go to any hardware store.

I'm on the same page with the mentality of feeling better if you knew it was 100%

 

alot of people plug them. I'm toying with getting an exhaust with the bung or welding one on mine so I can install a wideband for tuning.