I updated from 170E to 240E (Euro Spec, as I am in Germany) yesterday and the car runs much better.
Power delivery is much smoother, shiftability is much better. It's just nice..
And I tested acceleration using a vbox and 100-200 km/h improved from 10,6s to 10,3s and my 60-130 mph time is now 12s dead.
Vehicle is fully stock.