Yeah, I have done a few little things to it. Not too much really. Geared, exhaust (slip on with cermic coated from the headers), K&N and shimmed the carbs as far as I can without changing or jetting (which is not much as Suzuki thinks americans are idiots). Honestly though, I think all I had at that time was slip on. I did not do shims or filter till I dropped a cylinder (bad running carbs) and had to take it apart. And for some reason it is just a fast bike...I bought it used and from what I can see the person before never touched it (like lucky they changed the oil type nothing). I did talk to the guy at TFOG, and he had one gix 6 running similar to mine, and one that was significantly slower, both same year with same shit done to them. Guess I just got a good one! That and I am an awesome rider!