32C3 presentation (2015) explaining procedures at car manufactures & reverse engineering car's firmware <a href="https://media.ccc.de/v/32c3-7331-the_exhaust_emissions_scandal_dieselgate#t=2005" rel="nofollow noreferrer">https://media.ccc.de/v/32c3-7331-the_exhaust_emissions_scand...</a>