Whats up guys didn't know where i should post this but i got an o2 sensor in the mail and put it in my car, (bc after performing tests on the one in there originally i saw it was done) and went to inspection and failed again and now the numbers jumped and i failed horribly worse then last time....what i wanna know is when u get o2 sensors is there some type of cover over the element that needs to be removed before installation???