Hi All! First time on, love the forum and I already have a question. lol Can someone help me try and diagnosis my bike? My 2009 Street Glide was running fine and then I noticed that it was idling pretty high and the engine got louder than normal. Yesterday I took it out for a long ride thinking that the ride may fix it, when I stopped at a gas station to get a drink i shut it off and tried to start it again and got some back fire and it wouldn't start, tried it again and it started but kind of roughly. When I got to my destination, I was in the place for about three hours and when I came out to leave it started up fine and seamed back to normal even the sound of the engine was back to normal. As I was getting on to the freeway I felt like a sputter and it was acting up again. When I got home I shut it off and tried to start it up again and the same things happen, like at the gas station earlier. But this time it was like a hard clanking noise and then it started. I was wondering if regular (cheap) gas could create some of these problems or even the problem? I accidentally put the cheap gas in the last time I gassed up. The other thing I was thinking about is I recently installed the new 2 to 1 Vance and Hines exhaust on it and still need to get it dyno tuned it has the tuner installed but with a base map until it gets 65 to 70 degrees outside to tune it to the perferred weather. Sorry for the long story but just didn't want to leave anything out. Thanks for the feed back and any suggestions!