I recently replaced my stock headers with performance headers and now my car runs badly. I had the Hyundai dealer run a diagnostic check and they concluded for me to put the stock headers back on. Well, I know someone else has done this before, (Fast and the ferious). With a little research, I found what is called a "CO2 sensor eliminator". Is this something that really works and are there ather alturnatives for me to try? Please help me with this problem. I have been spending large amounts of money through mechanics and parts that is not fixing the issue.