im gotta do that anyway cause i put in a testpipe and i may have jacked up the O2 sensor anyway...from the 94-97 there is only one but the newer ones have 2 casue of the OBD2 setup...but u can get them at local stores or at honda...but there are different types, honda wants like 300 for the original and like bosch wants like 50 for a generic...my new question is: is the generic gonna do the same job as the expensive one?