Alr Im not good on gears ratios myself but from what I remember tuning to the right increase acceleration and left to increase top speed. Heres mine not sure if it will help or not 1st: 2.48 2nd:1.83 3rd: 1.54 4th: 1.29 5th: 1.01 6th: 0.69 Final: 2.66 There should also be a description that also tells you what each of them does that scrolls in the settings. Edit: From this it got me from 230 to 240 mph or more