Let me tell a little more of the story. I purchased this used system and was told it was for a sequi, crank trigger capable, with a wide bank o2, part #30-213211. The 5 diget of the part # is a 1, that should mean it has wide band o2 option. The used system did not have it because it was a spare computer for the other guy. Question is do I need just the sensor or sensor with calibration disc?