Android Drag Racing Porsche 9ff GT9-R half 1/2 mile level 9 tune setup V1.6
Upgrades: 5 5 1 4 5 5
The time 13.865 - 70 is close to the current world record, so you can win most of the competition races with this tune and earn a lot of RP.

Watch also my playlist for 1/2 mile and 1 mile tunes: https://www.youtube.com/watch?v=6s1W-Q6XzP0&list=PLks0RGQdRmC9r6TUtMb6xla6abVaKrINU