My 2020 Mini Clubman JCW (the 301hp one) has an ECU that has yet to have been cracked. It’s the same one used in a bunch of cars, including the 4 cylinder Supra, M135, and a few others, but it’s a real pain in terms of tuning. You can use the piggy pack stuff from RaceChip, Burger or Dinan, but they’re not perfect by…