Remote ECU tuning experience - sent file, got results

Did remote ECU tuning for the first time. Process was: 1. Bought a CMD Flash slave tool (rented actually) 2. Read my ECU file in the car (took 20 minutes) 3. Sent the file to the tuner via email 4. Got the modified file back in 2 hours 5. Flashed it back to the car Total time: about 3 hours including waiting. No need to visit a workshop. The future of tuning is remote imo. Results: F30 320d went from 190hp to 240hp. Very happy.