I just got a GYT-R carbon fiber pipe for my 04 450. All I can say is WOW! The sound, power, and looks are all awesome. My local dealer made me a great deal on it. I was going in to look at an aluminum one after I read the post on here a couple weeks ago about one, cant remember who it was now, but thank you. Anyhow the dealer had been sitting on the carbon one for awhile so I got it for less than an aluminum one, sweet. I had them order me a quiet cap for it too but I havent got it yet. Anyway, I noticed my bike is popping on decel quite abit more now and I am wondering if I need to re-jet. My bike has all basic mods done to it. If anyone has any suggestions I would be very greatful. Thanks in advance, Black n Blue. PS, I am not sure what jetting I have now, but I will ask my tech so I know. Happy Easter fellas.