Switch method is not that good, better to use hysteresis.
By using hysteresis you at least can see with diagnostics that egr is not used, while if you use switch method you cant tell is egr used or not because cable is disconnected. So better go for hysteresis
Here you can try my modification hysteresis was used, so keep egr cable plugged in.
You do not have permissions to view the files yet. You have to be registered and you have to make at least 3 quality / unique posts.