I recently put on a set of scorpion ss cans and gutted the cat on my 04 r1. It seems to me that I have lost power in my low and mid range. The only other mods done to it are the smog plates. I raced my gfs dad on his 03 before the mods and could beat him and now he beats me. I also rode his bike and his throttle response is so smooth its unbelievable. As soon as u hit the gas, his front wheel is up and smooth as can be. He doesnt have any mods other than a slipon and I feel my bike should feel like his and be even faster. Im pretty sure my bike is running lean/rich, but im not sure as to which. I have thought about putting it in adjustment mode to switch modes between low/mid/high by doing the thing where u hold down the 3 buttoms etc but I have no idea which way to go with it. Any help is greatly appreciated.