I have the normally aspirated 850 which puts out 168hp. When the light turns green the car does really well taking off. In fact, I'm a little surprised by it. Where I feel a lack of power though is when I'm merging onto a highway. I don't feel any real power until the transmission downshifts and the revs get past 4000. So it sounds like you should look for the turbo version of the 5cyl. From what I see on this board it is a real hp producer.