I just put on a Engine Guard last night. I took the bike out today & noticed what sounds like a whistling sound. I would have to think it's the Guard because it wasn't making that sound yesterday before I installed it. Does anyone have this issue??

 

Just put one on about a month ago but haven't noticed anything
like that, but my exhaust is very loud. What speed do you hear it?

 

30+ mph. I'm thinking about taking it off & see if the problem goes away. Then I'll know. It's not so much as a whistle, just sounds like alot of air. I don't know. I hope it's not an exhaust leak. What would that sound like? It's a 2010 FXDC. I can't imagine something like that happening. I checked where the pipes go into the engine & made sure the nuts were even & tight. I put a piece of paper close to where the pipes go in to see if the paper jumps around but it doesn't. Really, the only thing that has changed is the Guard.