Randy d

Looking for info on this new utv I bought and it has 38 miles on it now but the problem is after 10 minutes of driving it bogs down and I have to full throttle it to get it going I can let off the throttle and slowly get it going without bogging to much but it still does and when I give it full throttle it smells like sulfur. I'm leaning towards catalytic converter but it's still new. Any thoughts.