Do I need to rejet?

I have a 02 honda foreman rubicon 500 that I have been carburetor issues with. It was acting really sluggish so I rebuilt and cleaned the carburetor, replaced the air filter and spark plug then it was fine but a few days ago I saw that someone had put a F0-14 tractor muffler on their rubicon so I did it. And now it’s doing the same thing again…