GP4 Tweaker allows you to edit (tweak) many of Grand Prix 4's game aspects. This includes the implementation of certain aspects of the 2003 season qualifying rules, cockpit view changes, and much more.
GP4 Tweaker has been designed to works with multiple GP4 installation. If you have such case, the best way to works with multiple GP4 installation is by creating multiple desktop shortcuts and modify GP4 Tweaker parameters.
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