F-1 development included creating a particular debugging technique for rocket engines - bombs were put into chamber and exploded to create instabilities, so eng

F-1 development included creating a particular debugging technique for rocket engines - bombs were put into chamber and exploded to create instabilities, so engine dampening capabilities were tested. I wonder if while making Raptors some interesting techniques were created. For F-1 the result was so good the production engines routinely dampened instabilities, so Saturn-V didn't have this kind of problem in flight. Raptors seem to be less developed - of course, they have much higher chamber pressure and efficiency...