People did reverse engineer the Bosch software[1]. And it's entirely data driven. In short, you program it by tuning/changing its parameters, or as was the case

People did reverse engineer the Bosch software[1]. And it's entirely data driven. In short, you program it by tuning/changing its parameters, or as was the case with dieselgate, loading different drive profiles into the ECU. [1] https://media.ccc.de/v/32c3-7331-the_exhaust_emissions_scandal_dieselgate#video https://media.ccc.de/v/32c3-7331-the_exhaust_emissions_scand...