I found the hurkey jerkey to be obnoxious until I had Ivans flash done. Can't recommend it enough. I was lackadaisically pulling away from a stop sign with only one hand on the throttle and the bike lurched. I instinctively held on which in turn increased the throttle. Causing the bike to accelerate even more. Damn near dropped it. It was my fault for not being more attentive, but I never had that happen before in my 30 years of riding.