Whats goin on everybody? New to the forum. Second rear riding but just bought my first bike... this was always the place I came whenever I had questions so it seemed fitting that I just create an account so I could learn as much as possible. My bike is an 03 ZX9R with 7500. I acquired it petty cheap through a trade from someone who didnt take very good care of it. The engine would bog down at about 7000rpm but I have a friend who works on bikes and said he could fix it so in we went. He had been riding it w ith no air filter (f*ing idiot) and there was dirt and insects cogging up my carbs and jets. Had those taken apart cleaned and put back and added a k&n for good measure.