Racepak The new Racepak V300SD and V500SD products include all of the features and benefits of their successors, but now also include build in math channels. Additionally, the expanding product lineup will now include both serialized andgeneric loggers.The generic version is perfect for customers that only have one vehicle, whereas the serialized units are excellent for multi-car teams that need to keep track of several different log files throughout the course of anevent.