I have a 2006 suzuki gsxr 600, the first owner of this bike put an aftermarket exhaust on it. The second owner didn't like the way it sounded, so he takes it off and puts the stock on back on it! Well the 3rd owner (me) gets stuck with the problem. When I go into powerband it sputters, like the valve isn't opening up all the way. If anyone can give me a hand on what I need to do to get it running better please inform me!
Thanks