Well I just put my cpi's on last week and had a couple chances to get it out. The last time I hit it kinda hard through the gears and hit 6th and 2-3 seconds later just went flat. The bike ran damn good up to that, kind of the 1st thing I thought, but havn't had a chance to play with the jetting. Switched from the t5's and it never done it never done it with those on it, doesn't that sound rich though, thought the cpi's would need more fuel.