[momos750]

The difference between Efficient Mode and Sport+ is pretty dramatic in terms of power and throttle response.

You shouldn't have lost any power. I'd still recommend clearing the fault codes and let the car adapt.

Make sure to check 100% of the vacuum lines in the rear, maybe one of the lines got damaged/torn/ripped/cut during the removal. Most of the time when people loose power it's from a vacuum leak.