My sportsman xp 1000 muffler glows orange after its gets warmed up and I run it a few miles and the plastics get got with no melting and it seems to be a problem on alot of these atvs and I see guys fixing the problem with slip on mufflers without using tuners is this safe for the engine I'm thinking about going that route

 

Before you spend money on any aftermarket parts why not take it to a good dealer that can reflash the computer. We had to do that on a bunch of the early 800s that exhausts would glow from being too lean. It's at least worth a shot to see if that solves the problem.

 

Most of the guys that has had this problem says polaris says it's normal or they change the whole exhaust and the problem still exists after it leaves the dealer and there is a poll on another polaris forum and over half have this same issue and they say the only cure is a gse slip on and most aren't running tuners

 

Common issue on the 1000's. Reflash might help a bit but the stock mufflers are way too restrictive. I went with a GSE muffler and air filter on my Highlifter 1000 and made a huge difference. No need for a tuner. I've piped every Polaris I've owned (10 so far), never used a tuner, and never had any reliability issues.

 

Good to hear that and that's the route I'm gonna and it don't matter whether I drive it from cold start a mile down the rd or ride it an hr when the engine warms up thst muffler is glowing and I'm scared to ride in the woods with it lol but it runs great