THIS USER ASKED ๐Ÿ‘‡

What happens when you modify a pwc’s exhaust system?

THIS IS THE BEST ANSWER ๐Ÿ‘‡

PWC stands for Personal WaterCraft.
When you change the PWC exhaust system it can raise noise to an illegal level.
That’s why, you should avoid maneuvers that cause engine exhaust to rise out of the water. Noise can be irritating to people, so avoid making too much noise near residential and camping areas.