so im half way done getting the new RB exhaust in and i ended up breaking off the wire for the O2 sensor. i got it soddered back on kinda, but im not sure if it will work. is there any way to find out if it works? i think i may just go buy a new one. i searched and it seems like everyone had good things to say about replacing their sensor, so i may as well do that. but what does it do exactly and how do i know if my current one is working or not?

 

Might as well buy a new one, they're pretty cheap... could buy an A/F gauge... that will also tell you how well your O2 is working.