Hello to all from the Noob! Just got a new Yamaha 2012 WR450F. So far I installed the competition ECU with the shorter throttle stop. Included a pic for a visual of the difference of the two screws. I used a T25 star for the old and new screw. I immediately noticed a difference with new ECU right out of the box. Also removed my "Pee-shooter" from my exhaust, at least i sound a little more reputable at the track. Next stop is steering damper, any suggestions would be appreciated. Exhaust is a little further out due to cost again, open to suggestions. Thanks for any input.