The 1/36-scale trucks from Losi are a great way for anyone to get involved in the hobby. One of the most fun aspects is the ability to upgrade and hop-up your vehicles. One of the first upgrades many people make to their truck is to add a Losi 1/36-scale Xcelorin Brushless System. What makes the Xcelorin system special is the ability to customize the profile with the included Quick Programming Card (QPC). Recently we've seen some questions on-line regarding how to utilize the QPC and exactly how it works. We've taken a few minutes to show you how to program your system with this simple tool.