Data Acquisition Systems are becoming necessary for any level of racer, especially Time Attack/Trials competitors. It is something your closest competitor or the guy next to you in the paddock has, and it could be the only thing you need to squeeze out that second a lap you've been looking for. Being able to analyze your lap line for line, your speed through corners, and even your drift angle are all tools to helping you go faster. Never before has such advanced systems been offered to the grassroots racers, but now they can be had for the price of a set of tires and wheels. You be the judge on whether or not you need one...