Hey all just putting my 2 cents in . I have a 08 ec 250 I had a gnarly on my bike and totally destroyed it, my gas dealer didn't have a new one in stock but he had a stock pipe so I put that one on . I liked the stock pipe better, It just felt better. I am not a very technical guy on how everything works but if put something on my bike and it feels just as good if not better then I will say something.