Recently had my F56 tuned by Jan and just have to say its outstanding. Currently just a base tune, will be heading to dyno in the coming weeks to finalize some mapping and also will be testing some E85 tuning. Good things to come

Car is otherwise stock, just JCW Pro exhaust. Drivability is the same as stock, if not a bit smoother. No low end boost spike like I've felt on some tuned F56's, just smooth progressive boost curve. Power/torque difference is significant over stock...feels slightly under what a GP3 feels like. Will provide more data once we head to dyno...but for now, big thumbs up

 

Was this a remote tune or did you go to a shop? I'm not happy with my JB4 and am looking for local options.

 

I live locally to Jan...so went to his shop