2" to 3" exhaust... Worth it?

No thanks! I don’t know enough about them to comment. I just didn’t like what I saw. I could be proved wrong about them. They would have to be a plus in every situation. Or at least in the one there designed and intended for. I have not seen this as the case in multiple ways. Have they been used correctly by the car/engine owner, builder, tester? Things I don’t know and that would be a lot!