I found that if you are accelerating, let off, then suddenly stab the throttle wide open - it can cause a delay opening the throttle for a full second (verified via datalog). I figured it out and got rid of it, now it feels like a cable throttle. A scenario for this would be merging onto a freeway, having someone cut you off and then leave the lane, and you suddenly opening the throttle to keep up with the rest of traffic only to find yourself sitting idle for 1 second.