[wlug] Car Emissions Cheating: How It’s Done

Researchers have been digging through car firmware from Volkswagen and Audi to get to the bottom of the emissions-testing scandal that broke a couple of years ago. Turns out the code was written by Bosch, and important information in the form of “function sheets” (documentation for what the firmware does) was not (officially) forthcoming from that company. But unofficial sources can be found on online forums frequented by vehicle-modding enthusiasts. <https://arstechnica.com/cars/2017/05/volkswagen-bosch-fiat-diesel-emissions-cheats-cracked-open-in-new-research/>