Introducing the Tacx Smart Upgrade Kit. Are you looking for a challenge? The T2990 upgrade means that you can connect your Smart trainer to a computer & to enjoy the Tacx Advanced software. For the Bushido & the Vortex this means that the computer reads the performance data & therefore automatically regulates the resistance of the trainer. Overall this upgrade kit keeps you as close to real life conditions as possible, making your workouts different & much more refined.