I have a 2015 outty xmr 1k. It has around 20 hrs on it. I installed the snorkel your Atv kit and also full dual muzzy with the pc5. The exhaust is glowing orange for 6-10 inches off of heads. I’ve talked with a few people on this and received mixed opinions. I do not have the auto tune with the pc5. Some people say it’s running lean and some say it’s rich and it’s the excess fuel burning off in the exhaust. My experience is if it’s leaning out it will not run or perform the way it is. It’s not lacking giddy up in any way!! And it’s not spitting or sputtering. Some people say that it’s not an issue at all it’s just stainless and it will glow. Any and all opinions welcome. Sorry if I missed a thread but I went back 35 pages and didn’t see anything on this issue