Hi guys, I am kind of new to the forum. Can someone help me out and summurize the mods that could increase the performance of my 2002 500i Cat. I now own a Vinson 2003 and boy, the difference in power is simply unbelievable. The Cat simply can't keep up with the Vinson. So my understanding is that I can buy a jet kit, a K&N filter, a supertrapp exhaust and maybe increase the compresssion ratio by changing some of the gaskest to thinner ones. Which mods will be more noticeable for the buck? I am afraid that once done with all, I would be better off changing the bike. Your thoughts please. Thanx