Exhaust System without O2 sensor

[swimshady906]

If you had an exhaust system (cat back) without a whole for an O2 sensor, and u leave it unplugged ( i guess) what would happen? Would the computer freakout and dump gas into it or burn way lean or both or just a check engine light would come on?

[Mole]

you would have a mean exhaust leak, and CEL.

i would research in getting a trick o2 sensor where that it wires into another o2 sensor. dont know much about it though.

why would you want to do this anyway?

[Yanks0114]

talk to jim @ FA if you want an o2 simulator

[swimshady906]

Alright thanks, I was just wondering.

[Ragtop George]

Your check engine light would come on, but the car would run normally. The rear oxygen sensor is only for OBD II emissions testing, not for setting the mixture.

George

[swimshady906]

Thanks George, thats what i wanted to know It's a scary thought otherwise