Which one of you drives BSR Stage 3 ? (with a 2.4T/193PS Automatic)

Hy, would like to know who drives a 2.4T with BSR 3 and learn about its experiences. Would you like to upgrade to Stage 3 + LLK Supposedly “must” update the software immediately as soon as the Downpipe/Kat/2.5 exhaust is installed, otherwise there is an engine damage ? An update to the LLK system does not exist ?! That’s why I would like to know who is travelling in the class. thank you lg