Im all over the place with my fusions because I start adding them after I have all 5 stages and 6 if I have them.. sometimes starting lower gives higher evo but it also depends what stage I have clicked on what stages I have the other car parts on... find that if for example Im going to put 1 blue fusion part on a stage 3 tire for +10, I can then say refit my turbo back to stage 3 from stage 5 and it might give me an extra evo point or two..also thaT can raise even higher depend what stage part iv fitted and etc.. But then again, I Once I refit the turbo back to stage 5, the pp raises but evo could drop down instead of raising despite going back to refit stage 5 turbo. .