No chip is set on kill, but it is also the limit of what the car can do. 400 - 600 rpm under working stall (high gear, foot on the brake , wing the throttle and make note of highest rpm). Yes you don't want the slicks to spin, but to slip just a bit. Once again you need to know that spot at which it knocks the tires off and then drop in 1/4 lb. increments.