I bought an 05 WR450F a couple of weeks ago, WOW, Big change from an (nobody laugh now) 83 XR350. I had the dealer take out the throttle stop and change the pipe tip. I will be re-jetting and removing the AIS. Can anyone tell me how removing the Grey wire will affect the performance, I know it changes the timing to that of the YZ but, is it going to be noticeable? Can I change it back or does it change it permanently.