IMPORT TUNER CHALLENGE

Very easily boostable with a friend. It must be a ranked match for the achievements to unlock (even though the description does not state it). You and your friend simply take turns winning and you'll have it after your first win.

For each race, the host will have to recreate the match. Make sure to reduce the match point to one to maximize the wins.

You can also help to speed up the wins when it is your turn to lose by reversing into the opposite direction while side swiping the walls.

The longest part of this is setting up the race, finding the race and waiting during the loading screens. The races only took maybe ten to fifteen seconds.