May need a smaller jet now but I'm going to have her run it a bit longer before I open it up. When the bike is warm it runs great. Still I think a smaller jet will open it up even more but I don't think she needs to go any faster, keeping it a bit rich will help the motor last a bit longer. She's at the 30-35 mph range with that pipe and the stock sprocket. I may put a 41 tooth on hers just to allow lower rpm at high speed for long distance trips. Wait till you see the pipe in person it looks better then the photo and sounds sick. Just like a dirt bike.