I'm a technician myself and have access to a vagcom, it has no faults and boosting is fine compared up to others, i think that the trail may not have been put on properly, but hey i may have missed something, in a way would be nice if i found something wrong which then give some power back, but cant see it. The trail is for 5 hours, i assume that is 5 hours of running time, not just 5 hours from its upload?