Dynojet's software allows you to "race" up to three vehicles against each other in a simulated drag race. Here, I have run the blue car with a stock driveshaft and the red car with the 1LE aluminum driveshaft. See the difference at the end of the run. The 1LE equipped car has gone 1898.8 feet, while the stock driveshaft equipped car has only gone 1868 feet.