Hey all , first post for me but have been pouring over this site for few days now. I recently baught an 05wr450 and love it, but I really wan't to uncork it I ride trails mostly in AZ desert. It sounds like these are a must. Yamaha GYT-R AIS Removal Kit, P/N GYT-5TJ93-69-00 1.) Removed the grey-wire 2.) Add an adjustable Fuel Screw 3.) Add a MJ 168 and 48 PJ( or w/e is recommended) 4.) Add a throttle stop screw 5.) Add a exchaust insert or remove baffle 6.) Open the air box openings I don't have the means or ability to do all these myself so I want to have it done professionally. Any estimate on how much this is goin to cost? also is it best to take it to a yamaha dealer or is it something any reputable shop will do? I don't know enough about these bikes to do myself. Do I have to have it rejetted afterwards?