To be honest, coming to this as my first turbo I was a little surprised to understand that just putting it in third and planting the throttle is a little under whelming. My power too tails off to a bit of a flat after 5k and I have always been used to a hard pull all the way to the limit then a change, whereas in the GTI I seem to make better progress changing up just before 5k, if you look at a torque curve it starts to become apparent that this is just traits of the turbo i suppose