Teldarpaper

good evening ladies and gents. My 03 S55 will NOT pass emissions due to readiness. I have gone through all the advice and driven 700 miles. Still failing 3. I took it to a performance shop and they are suggesting a new computer. There is absolutely Nothing wrong with the car...so I’m not sold on the recommendation.
Anyone with similar problems？ another shop told me to get a new tune that would solve it.