ok....so my rear oxygen sensor blew out and i just competley took it out of the cat.....so now theres a hole there, is it bad to run my car like that untill i replace the sensor?

thanks

 

yes

 

what does it do....

 

Nothing, if anything it causes irratic back pressure and may hinder gas milage. But it wont hurt you car. It will have a loud *** exuast leak.. either weld it up, new o2 sesnor or find a bolt that will fit it.

-Eric