All vehicles, though there is some learning done that the ecm applies to the next start.
My jeep ran the same way before and after all 4 new o2 sensors. NTK brand. One cleaning was before changing the sensors and one was after. As said, it runs smooth and quiet after cleaning for about a month.. a little less actually the 2nd time. Runs fine on the road and no check engine light. What I really found interesting was the effect of the pure fuel vs E10.