Talk:Tour Auto Speciale/@comment-26455682-20160928013803/@comment-27945602-20160928031950

How much upgrade is needed to pass 6.4 speed challenge ? I'm R$+brake 3 and that was enough for 1.1~6.3 but 6.4 I have no idea how much to spend. I heard that full engine upgrade is enough from my friend but is there a better option ?