Re: HELP! 2001 CBR 600 F4I throttle problems?
You have the wrong octane in there. Octane rates define the burn temp. Higher octane= more additives to prevent a fast response. The cbr is rated for 91 highest! 94 means you are slowing your ignition firing. Unless you modifed the engine for higher compression, you are pouring crud in the gas. Try 91 and move down to 89 or 87 until the engine knocks. That means you are too low and the gas is preigniting. Have octane boost to get you back to the no knocks. If you want a good ignition with lowest octane, try water wetter to keep the hot spots in the engine to a minimum.