Go spend a racing day in the tower and look at the reaction times. The averages will reflect what 440Jim has stated. Delay box racers on average will be .02 to .03 better.

The box has also beem credited with making an average or poor bottom bulb racer a good top bulb racer. It takes a lot more discipline to concentrate on the full tree and hit your spot. It also takes more effort to sort out your car so that human reaction and car reaction work together. The delay box was created by Ike Hamma so that he could run Super Pro and Super Gas with the same setup.