Hello together, I would like to make myself independent with the Knenfeldoptimierung. Have thought about buying the Autotuner as a slave for the start as a flasher and first use an external master for the data. Can one of you recommend me a good master? Is one bound to the master or can one use several at the same time on the Autotuner? Do one pay with one master monthly fees or is one contractually bound to it over a long period of time? Or do one pay only pr o Optimized file? Thank you in advance!