This event is ridiculously easy, I have my Mini cooper s '11 which I fully tuned anyway, I just reduce the engine output to get to 400pp.
Normally get to first place in any event half way through the second lap.
For the 500pp event I use a Golf IV R which has been fully tuned and then limited, again that completely dominates.
Nissan R35 fully tuned and detuned for the 650pp events. This event in the nurburgring is the only one that is relatively close, second place finishes about 6 seconds behind me depending on what car it is.