Ok, so I did some work on the factory pipe and muffler. Also had a buddy of mine who is a bike mechanic clean the port up a little bit. Nothing serious... it is ALOT quicker now, not so much faster, but quicker. Thinking about doing the clutch mod if ya'll think it will help. What I did really got the engine to spin up faster. The port won't come into play unless I get the clutch mod, so the muffler mod made the biggest difference. Turn your computer up... it sounds really good in my opinion...

http://www.youtube.com/watch?v...mSTFI&feature=channel

http://www.youtube.com/watch?v...-gmx9k&feature=channel

 

They clutch mods will help a lot. The EPI helps with low end and the Hauck helps with the top end. What did you do to the stock pipe? It sounds good.