actually it really depends....I know for turbo cars (new) the Air Flow is controlled by the ECu...if that doesnt like more cold air the car will become more hesitant to drive. For N/A cars like the corolla, Im not too sure if you need to get the car re-tuned after modifying the air flow. Surely not??? But yeah i guess just reset the ECU after installing the POD....well see....im still waiting for the part from NENGUN....SO SLOW !!!!!!!!