Hey I put my ZC header on yesterday but my o2 sensor is acting gay and wont screw in no matter which way I turn that MF!
Im pissed cuz I wanna drive my car to see what my new ZC header and and stuff feels like. What will happen if I drive my car with the o2 sensor out? Will my ECU go mad crazy?

The sensor was on my d15b then my 92-95 civic header. It fit on those ok, I'm think it may be to big?

Btw which way do I screw it in and could someone tell me which o2 sensor i'm gonna need and how much it'll be for a new o2 sensor? If I need a new one that is.

HELP ASAP please