Need tips on how to get it off. The manifold is already out of the car and the bolt part of the sensor is now stripped. I tried a 7/8, crecent wrench, vice grip & 2x4 but nothing will make that damn thing budge. On last resort, tomorrow I will be going to buy a new one

I swapped my manifold with the manifold from my del sol si which is almost like a 4-2-1 header. It looks alot better than my dx manifold.I guess i might just need to go buy a new o2 sensor now. Dont these things need to be replaced as routine maintenece anyway? How often should they be changed?

Is it bad to drive without one? my check engine light is on and its running kinda crappy but I only drove it across my driveway. Guess i'll have to drive the sol tomorro...