AUS_Doug is right, but it is not only the magic data. Most important in my view is that the physics file and the power torque curve are based on a fixed bhp value.
So, if you give some teams different power figures you end up with inaccurate data for those teams.
That's the reason why in my performance files all teams have the same bhp value witch is
the value used in the physics file.
In general you can simplified say that
- physics, power torque curve and maximum performance value determine the pole sitter/race winer lap times.
- the difference in lap times between the cars is achieved through the performance values for race and quali.
- track specific fine tuning is possible over the magic data.
My personal GP4 files at : www.4shared.com ______ My Blog at : Gitanes GP4 work
* Performance Files * LoadingScreens GoogleMaps * GP4 Tracks and Cars Databases