honda rancher 420 exhaust

Remove the plug from the end of the muffler......it is noticably louder. Like others have suggested it will not be more powerful. Drilling some holes in the end cap cost nothing and will achieve a louder exhaust tone but there's no going back at that point. I mhave read some reviews where someone has put an exhaust and tuner on it and it gives about 3 horsepower and a few pounds of torque. These numbers are noticable but it come at a high price.........I think around $500 total.