[Oldsguy]

From what I understand, AIR pumps were added to introduce air into the exhaust which oxygenated the exhaust gases enough to enable efficient operation of the catylitic converter. Or, did I remember that wrong? At any rate, usually changing/removing something on the newer (post smogger year) cars could adversly effect the operation of the engine. I am not so sure about that AIR pump. Maybe someone else has a better line on this one.