Ok, I took the car to emissions just to see what the numbers looked like. This time around, HC was 10 and CO was 0. exactly two years ago HC was 93 and CO was 0.46. does the significant reduction in NC mean the car is running lean? there was no surging while at the station, but it surged the whole way home. any thoughts on how these numbers might relate to a specific issue? I still have yet to check on the FPR thoroughly.