Hacking a VW Golf Power Steering ECU
>> Only try this on an actual car if you know what you’re doing. Even though only two very small patches are made to the model specific calibration values, making changes to your EPS might have unintended consequences.The author has no idea what he's doing, or more specifically what hazards might be lurking right under his nose. I worked in EPS for 6 years and it's all really cool stuff right up until you download code and it promptly turns left all the way to the stop the first time you touch the wheel. That was a bug ;-)  I can't tell you how hazardous it may be to tweak tuning parameters - that depends on a lot of things. Tuning aside, just commanding it over CAN might allow you to do things that wouldn't normally happen and might damage something - i.e. are all protections still in place when taking an external command? I didn't work on this model, or at this company, I'm just saying I've seen a lot of stuff and wouldn't recommend messing around with safety-critical ECUs like this.