Bought a 2006 Raptor 350 recently. Stock other than a slip on pipe. Have only ridden it up and down the road a couple times before tonight. Tonight my wife and I went out for a ride and she drove the Raptor first. She was going slow and keeping the RPMs up a little but nothing bad. I drove after about 10 minutes and I got on it a little bit and putted around a bit as well. Once the engine was nice and warm I started to notice it backfire and then slowly over the course of about a mile it started bogging down and eventually died on me. Waited about 5 minutes and then it started up and at that point I just loaded into the back of my truck and went home. What is the first thing I should check?