Talk:Porsche 911 RSR Championship/@comment-27563248-20160517183116/@comment-27563248-20160517185337

I'm counting the efficiency of each upgrade. F.e. exhaust 2 costs 45gc and gives 0,7PR. 0,7*10/40=15,56%. Engine 3 costs 80gc and gives 0,4PR, after it there will be engine 4 with 0,5PR for RS. The formula: (0,4+0,5)*10/80=11,25%. So it's better to do exhaust 2 update cause its efficiency is bigger. And so on.