aah. thanks for the info. i've already done the grey wire mod, and i'll order the yz throttle stop. should i also order the jetting shown in the AIS kit on the Yammie site, or leave well enough alone with the stock jetting? thanks again jim YZ450 needle and 168/48 jets. It is a must. Also lose the CARB bypass. Completely new bike...you also need a Rekluse!