Oh my gosh fella's! This thing is a beast! I installed the full Yoshi and a primary drive 13 tooth front sproket. Its kinda scarey the difference I felt. I have heard time after time its okay to run the full system with just the CB, but I still have my doubts. I have always been told that when the header turns that purple color after riding you are running a little lean. Due to the header getting so hot during the lean condition. Im to the point though that I dont care. Ive got a Power Commander on order and Im just waiting for the arrival! In the mean time Im going to ride it like I stole it. Pictures will follow soon!