Hey Everyone, Thanks for all the advice so far. One more question...What is the BK mod? I have a 02' Canadian WR 426 and I have added the e-series pipe, taken off the airbox, got the thing jetted right fianally. The one weird thing is that when I hit the throttle quickly it seems to stumble at low RPM's... I know the Canadian bikes dont have the throttle stop or the "grey wire" (I think) If I do this "BK" mod will the bike stop the hesitation? Any suggestins?